drm/radeon/rv770: Move 'rv770_get_*()'s prototypes to shared header

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/radeon/rv770_dpm.c:47:18: warning: no previous prototype for ‘rv770_get_ps’ [-Wmissing-prototypes]
 47 | struct rv7xx_ps *rv770_get_ps(struct radeon_ps *rps)
 | ^~~~~~~~~~~~
 drivers/gpu/drm/radeon/rv770_dpm.c:54:26: warning: no previous prototype for ‘rv770_get_pi’ [-Wmissing-prototypes]
 54 | struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev)
 | ^~~~~~~~~~~~

Cc: Evan Quan <evan.quan@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/btc_dpm.c

@@ -30,6 +30,7 @@
 #include "btcd.h"
 #include "cypress_dpm.h"
 #include "r600_dpm.h"
+#include "rv770.h"
 #include "radeon.h"
 #include "radeon_asic.h"
 
@@ -48,8 +49,6 @@
 #ifndef BTC_MGCG_SEQUENCE
 #define BTC_MGCG_SEQUENCE  300
 
-struct rv7xx_ps *rv770_get_ps(struct radeon_ps *rps);
-struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev);
 struct evergreen_power_info *evergreen_get_pi(struct radeon_device *rdev);
 
 extern int ni_mc_load_microcode(struct radeon_device *rdev);

drivers/gpu/drm/radeon/cypress_dpm.c

@@ -28,6 +28,7 @@
 #include "cypress_dpm.h"
 #include "evergreend.h"
 #include "r600_dpm.h"
+#include "rv770.h"
 #include "radeon.h"
 #include "radeon_asic.h"
 
@@ -43,8 +44,6 @@
 #define MC_CG_SEQ_YCLK_SUSPEND      0x04
 #define MC_CG_SEQ_YCLK_RESUME       0x0a
 
-struct rv7xx_ps *rv770_get_ps(struct radeon_ps *rps);
-struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev);
 struct evergreen_power_info *evergreen_get_pi(struct radeon_device *rdev);
 
 static void cypress_enable_bif_dynamic_pcie_gen2(struct radeon_device *rdev,

drivers/gpu/drm/radeon/ni_dpm.c

@@ -29,6 +29,7 @@
 #include "ni_dpm.h"
 #include "nid.h"
 #include "r600_dpm.h"
+#include "rv770.h"
 #include "radeon.h"
 #include "radeon_asic.h"
 
@@ -719,7 +720,6 @@ static const u32 cayman_sysls_enable[] =
 };
 #define CAYMAN_SYSLS_ENABLE_LENGTH sizeof(cayman_sysls_enable) / (3 * sizeof(u32))
 
-struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev);
 struct evergreen_power_info *evergreen_get_pi(struct radeon_device *rdev);
 
 extern int ni_mc_load_microcode(struct radeon_device *rdev);

drivers/gpu/drm/radeon/rv730_dpm.c

@@ -25,6 +25,7 @@
 #include "radeon.h"
 #include "rv730d.h"
 #include "r600_dpm.h"
+#include "rv770.h"
 #include "rv770_dpm.h"
 #include "atom.h"
 
@@ -33,9 +34,6 @@
 #define MC_CG_ARB_FREQ_F2           0x0c
 #define MC_CG_ARB_FREQ_F3           0x0d
 
-struct rv7xx_ps *rv770_get_ps(struct radeon_ps *rps);
-struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev);
-
 int rv730_populate_sclk_value(struct radeon_device *rdev,
 			      u32 engine_clock,
 			      RV770_SMC_SCLK_VALUE *sclk)

drivers/gpu/drm/radeon/rv740_dpm.c

@@ -25,11 +25,10 @@
 #include "radeon.h"
 #include "rv740d.h"
 #include "r600_dpm.h"
+#include "rv770.h"
 #include "rv770_dpm.h"
 #include "atom.h"
 
-struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev);
-
 u32 rv740_get_decoded_reference_divider(u32 encoded_ref)
 {
 	u32 ref = 0;

drivers/gpu/drm/radeon/rv770.h

@@ -29,7 +29,11 @@
 #define __RADEON_RV770_H__
 
 struct radeon_device;
+struct radeon_ps;
 
 void rv770_set_clk_bypass_mode(struct radeon_device *rdev);
 
+struct rv7xx_ps *rv770_get_ps(struct radeon_ps *rps);
+struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev);
+
 #endif				/* __RADEON_RV770_H__ */

drivers/gpu/drm/radeon/rv770_dpm.c

@@ -24,6 +24,7 @@
 
 #include "radeon.h"
 #include "radeon_asic.h"
+#include "rv770.h"
 #include "rv770d.h"
 #include "r600_dpm.h"
 #include "rv770_dpm.h"

drivers/gpu/drm/radeon/si_dpm.c

@@ -27,6 +27,7 @@
 
 #include "atom.h"
 #include "r600_dpm.h"
+#include "rv770.h"
 #include "radeon.h"
 #include "radeon_asic.h"
 #include "si_dpm.h"
@@ -1717,7 +1718,6 @@ static const struct si_powertune_data powertune_data_hainan =
 	true
 };
 
-struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev);
 struct evergreen_power_info *evergreen_get_pi(struct radeon_device *rdev);
 struct ni_power_info *ni_get_pi(struct radeon_device *rdev);
 struct ni_ps *ni_get_ps(struct radeon_ps *rps);