drm/simpledrm: Add [AX]RGB2101010 formats

This is the format used by the bootloader framebuffer on Apple ARM64
platforms.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20211212062407.138309-4-marcan@marcan.st

drivers/gpu/drm/tiny/simpledrm.c

@@ -571,8 +571,8 @@ static const uint32_t simpledrm_default_formats[] = {
 	//DRM_FORMAT_XRGB1555,
 	//DRM_FORMAT_ARGB1555,
 	DRM_FORMAT_RGB888,
-	//DRM_FORMAT_XRGB2101010,
-	//DRM_FORMAT_ARGB2101010,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_ARGB2101010,
 };
 
 static const uint64_t simpledrm_format_modifiers[] = {