drm/bridge: Add vendor prefixes

Use vendor prefixes for Kconfig symbols and filenames. This should make
it easier to identify the various bridge drivers and to organize the
directory.

v2: fix object name for dw-hdmi (Fabio Estevam)

Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index acef322..adac325 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -3,16 +3,16 @@
 	depends on DRM
 	select DRM_KMS_HELPER
 
-config DRM_PTN3460
-	tristate "PTN3460 DP/LVDS bridge"
+config DRM_NXP_PTN3460
+	tristate "NXP PTN3460 DP/LVDS bridge"
 	depends on DRM
 	depends on OF
 	select DRM_KMS_HELPER
 	select DRM_PANEL
 	---help---
-	  ptn3460 eDP-LVDS bridge chip driver.
+	  NXP PTN3460 eDP-LVDS bridge chip driver.
 
-config DRM_PS8622
+config DRM_PARADE_PS8622
 	tristate "Parade eDP/LVDS bridge"
 	depends on DRM
 	depends on OF
@@ -21,4 +21,4 @@
 	select BACKLIGHT_LCD_SUPPORT
 	select BACKLIGHT_CLASS_DEVICE
 	---help---
-	  parade eDP-LVDS bridge chip driver.
+	  Parade eDP-LVDS bridge chip driver.