drm: Put related statements next to each other in Makefile

Give the Makefile a bit more structure by putting rules for core,
helpers, drivers, etc next to each other.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220421073108.19226-2-tzimmermann@suse.de

drivers/gpu/drm/Makefile

@@ -18,7 +18,6 @@ drm-y       :=	drm_aperture.o drm_auth.o drm_cache.o \
 		drm_syncobj.o drm_lease.o drm_writeback.o drm_client.o \
 		drm_client_modeset.o drm_atomic_uapi.o \
 		drm_managed.o drm_vblank_work.o
-
 drm-$(CONFIG_DRM_LEGACY) += drm_agpsupport.o drm_bufs.o drm_context.o drm_dma.o \
 			    drm_hashtab.o drm_irq.o drm_legacy_misc.o drm_lock.o \
 			    drm_memory.o drm_scatter.o drm_vm.o
@@ -30,8 +29,16 @@ drm-$(CONFIG_PCI) += drm_pci.o
 drm-$(CONFIG_DEBUG_FS) += drm_debugfs.o drm_debugfs_crc.o
 drm-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o
 drm-$(CONFIG_DRM_PRIVACY_SCREEN) += drm_privacy_screen.o drm_privacy_screen_x86.o
+obj-$(CONFIG_DRM)	+= drm.o
 
 obj-$(CONFIG_DRM_NOMODESET) += drm_nomodeset.o
+obj-$(CONFIG_DRM_PANEL_ORIENTATION_QUIRKS) += drm_panel_orientation_quirks.o
+
+#
+# Memory-management helpers
+#
+
+obj-$(CONFIG_DRM_BUDDY) += drm_buddy.o
 
 drm_cma_helper-y := drm_gem_cma_helper.o
 drm_cma_helper-$(CONFIG_DRM_KMS_HELPER) += drm_fb_cma_helper.o
@@ -40,14 +47,16 @@ obj-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_cma_helper.o
 drm_shmem_helper-y := drm_gem_shmem_helper.o
 obj-$(CONFIG_DRM_GEM_SHMEM_HELPER) += drm_shmem_helper.o
 
-obj-$(CONFIG_DRM_BUDDY) += drm_buddy.o
-
 drm_vram_helper-y := drm_gem_vram_helper.o
 obj-$(CONFIG_DRM_VRAM_HELPER) += drm_vram_helper.o
 
 drm_ttm_helper-y := drm_gem_ttm_helper.o
 obj-$(CONFIG_DRM_TTM_HELPER) += drm_ttm_helper.o
 
+#
+# Modesetting helpers
+#
+
 drm_kms_helper-y := drm_bridge_connector.o drm_crtc_helper.o \
 		drm_dsc.o drm_encoder_slave.o drm_flip_work.o drm_hdcp.o \
 		drm_probe_helper.o \
@@ -60,14 +69,16 @@ drm_kms_helper-y := drm_bridge_connector.o drm_crtc_helper.o \
 		drm_format_helper.o drm_self_refresh_helper.o drm_rect.o
 drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o
 drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fb_helper.o
-
 obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
+
+#
+# Drivers and the rest
+#
+
 obj-$(CONFIG_DRM_DEBUG_SELFTEST) += selftests/
 
-obj-$(CONFIG_DRM)	+= drm.o
 obj-$(CONFIG_DRM_MIPI_DBI) += drm_mipi_dbi.o
 obj-$(CONFIG_DRM_MIPI_DSI) += drm_mipi_dsi.o
-obj-$(CONFIG_DRM_PANEL_ORIENTATION_QUIRKS) += drm_panel_orientation_quirks.o
 obj-y			+= arm/
 obj-y			+= dp/
 obj-$(CONFIG_DRM_TTM)	+= ttm/