drm: drm_blend.c: Use tabs for code indents

Remove space and use tabs for indent the code to follow the
Linux kernel coding conventions.
Problem found by checkpatch.
Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/f441188f84aac2f9f72f36a42c88623b16cd1f87.1618828127.git.martinsdecarvalhobeatriz@gmail.com

drivers/gpu/drm/drm_blend.c

@@ -328,8 +328,8 @@ unsigned int drm_rotation_simplify(unsigned int rotation,
 	if (rotation & ~supported_rotations) {
 		rotation ^= DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y;
 		rotation = (rotation & DRM_MODE_REFLECT_MASK) |
-		           BIT((ffs(rotation & DRM_MODE_ROTATE_MASK) + 1)
-		           % 4);
+			    BIT((ffs(rotation & DRM_MODE_ROTATE_MASK) + 1)
+			    % 4);
 	}
 
 	return rotation;