drm/display: Make DisplayPort CEC-over-AUX Kconfig name consistent

While most display helpers Kconfig symbols have the DRM_DISPLAY prefix,
the DisplayPort CEC tunnelling implementation uses CONFIG_DRM_DISPLAY_DP_AUX_CEC.

Since the number of users is limited, we can easily rename it to make it
consistent.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20240327-kms-kconfig-helpers-v3-4-eafee11b84b3@kernel.orgSigned-off-by: Maxime Ripard <mripard@kernel.org>

arch/parisc/configs/generic-32bit_defconfig

@@ -131,7 +131,7 @@ CONFIG_PPDEV=m
 CONFIG_I2C=y
 CONFIG_HWMON=m
 CONFIG_DRM=m
-CONFIG_DRM_DP_CEC=y
+CONFIG_DRM_DISPLAY_DP_AUX_CEC=y
 # CONFIG_DRM_I2C_CH7006 is not set
 # CONFIG_DRM_I2C_SIL164 is not set
 CONFIG_DRM_RADEON=m

drivers/gpu/drm/display/Kconfig

@@ -59,7 +59,7 @@ config DRM_DISPLAY_DP_AUX_CHARDEV
 	  read and write values to arbitrary DPCD registers on the DP aux
 	  channel.
 
-config DRM_DP_CEC
+config DRM_DISPLAY_DP_AUX_CEC
 	bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support"
 	depends on DRM && DRM_DISPLAY_HELPER
 	select DRM_DISPLAY_DP_HELPER

drivers/gpu/drm/display/Makefile

@@ -15,6 +15,6 @@ drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_HELPER) += \
 	drm_hdmi_helper.o \
 	drm_scdc_helper.o
 drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_AUX_CHARDEV) += drm_dp_aux_dev.o
-drm_display_helper-$(CONFIG_DRM_DP_CEC) += drm_dp_cec.o
+drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_AUX_CEC) += drm_dp_cec.o
 
 obj-$(CONFIG_DRM_DISPLAY_HELPER) += drm_display_helper.o

include/drm/display/drm_dp_helper.h

@@ -733,7 +733,7 @@ static inline int drm_panel_dp_aux_backlight(struct drm_panel *panel,
 
 #endif
 
-#ifdef CONFIG_DRM_DP_CEC
+#ifdef CONFIG_DRM_DISPLAY_DP_AUX_CEC
 void drm_dp_cec_irq(struct drm_dp_aux *aux);
 void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
 				   struct drm_connector *connector);