drm: Switch DRM_DISPLAY_HDMI_HELPER to depends on

Most of our helpers have relied on being selected so far through
Kconfig, but that creates issues when we have multiple layers of helpers
with some depending on others.

Indeed, select doesn't select a dependency's dependencies, and thus
isn't super intuitive. Depends on however doesn't have that limitation,
so we can just switch all the drivers that were selecting
DRM_DISPLAY_HDMI_HELPER to depend on it.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/20240327-kms-kconfig-helpers-v3-12-eafee11b84b3@kernel.orgSigned-off-by: Maxime Ripard <mripard@kernel.org>

drivers/gpu/drm/amd/amdgpu/Kconfig

@@ -5,12 +5,12 @@ config DRM_AMDGPU
 	depends on DRM
 	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HDCP_HELPER
+	depends on DRM_DISPLAY_HDMI_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on MMU
 	depends on PCI
 	depends on !UML
 	select FW_LOADER
-	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER
 	select DRM_SCHED
 	select DRM_TTM

drivers/gpu/drm/bridge/synopsys/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 config DRM_DW_HDMI
 	tristate
+	depends on DRM_DISPLAY_HDMI_HELPER
 	depends on DRM_DISPLAY_HELPER
-	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER
 	select REGMAP_MMIO
 	select CEC_CORE if CEC_NOTIFIER

drivers/gpu/drm/display/Kconfig

@@ -74,5 +74,6 @@ config DRM_DISPLAY_HDCP_HELPER
 config DRM_DISPLAY_HDMI_HELPER
 	bool "DRM HDMI Helpers"
 	depends on DRM_DISPLAY_HELPER
+	default y
 	help
 	  DRM display helpers for HDMI.

drivers/gpu/drm/i915/Kconfig

@@ -4,6 +4,7 @@ config DRM_I915
 	depends on DRM
 	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HDCP_HELPER
+	depends on DRM_DISPLAY_HDMI_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on X86 && PCI
 	depends on !PREEMPT_RT
@@ -13,7 +14,6 @@ config DRM_I915
 	# the shmem_readpage() which depends upon tmpfs
 	select SHMEM
 	select TMPFS
-	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER
 	select DRM_PANEL
 	select DRM_MIPI_DSI

drivers/gpu/drm/nouveau/Kconfig

@@ -3,12 +3,12 @@ config DRM_NOUVEAU
 	tristate "Nouveau (NVIDIA) cards"
 	depends on DRM
 	depends on DRM_DISPLAY_DP_HELPER
+	depends on DRM_DISPLAY_HDMI_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on PCI
 	depends on MMU
 	select IOMMU_API
 	select FW_LOADER
-	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER
 	select DRM_TTM
 	select DRM_TTM_HELPER

drivers/gpu/drm/tegra/Kconfig

@@ -6,9 +6,9 @@ config DRM_TEGRA
 	depends on DRM
 	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_DP_HELPER
+	depends on DRM_DISPLAY_HDMI_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
-	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI
 	select DRM_PANEL

drivers/gpu/drm/vc4/Kconfig

@@ -4,13 +4,13 @@ config DRM_VC4
 	depends on ARCH_BCM || ARCH_BCM2835 || COMPILE_TEST
 	depends on COMMON_CLK
 	depends on DRM
+	depends on DRM_DISPLAY_HDMI_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on PM
 	# Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
 	# happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
 	depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
 	depends on SND && SND_SOC
-	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER
 	select DRM_GEM_DMA_HELPER
 	select DRM_PANEL_BRIDGE

drivers/gpu/drm/xe/Kconfig

@@ -5,6 +5,7 @@ config DRM_XE
 	depends on DRM
 	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HDCP_HELPER
+	depends on DRM_DISPLAY_HDMI_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on MMU
 	depends on PCI
@@ -19,7 +20,6 @@ config DRM_XE
 	select DRM_KUNIT_TEST_HELPERS if DRM_XE_KUNIT_TEST != n
 	select DRM_PANEL
 	select DRM_SUBALLOC_HELPER
-	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_MIPI_DSI
 	select RELAY
 	select IRQ_WORK