drm/vmwgfx: Sort primary plane formats by order of preference

The table of primary plane formats wasn't sorted at all, leading to
applications picking our least desirable formats by defaults.

Sort the primary plane formats according to our order of preference.

Nice side-effect of this change is that it makes IGT's kms_atomic
plane-invalid-params pass because the test picks the first format
which for vmwgfx was DRM_FORMAT_XRGB1555 and uses fb's with odd sizes
which make Pixman, which IGT depends on assert due to the fact that our
16bpp formats aren't 32 bit aligned like Pixman requires all formats
to be.

Signed-off-by: Zack Rusin <[email protected]>
Fixes: 36cc79b ("drm/vmwgfx: Add universal plane support")
Cc: Broadcom internal kernel review list <[email protected]>
Cc: [email protected]
Cc: <[email protected]> # v4.12+
Acked-by: Pekka Paalanen <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: zackr

drivers/gpu/drm/vmwgfx/vmwgfx_kms.h

@@ -243,10 +243,10 @@ struct vmw_framebuffer_bo {
 
 
 static const uint32_t __maybe_unused vmw_primary_plane_formats[] = {
-	DRM_FORMAT_XRGB1555,
-	DRM_FORMAT_RGB565,
 	DRM_FORMAT_XRGB8888,
 	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB1555,
 };
 
 static const uint32_t __maybe_unused vmw_cursor_plane_formats[] = {