drm/exynos: gsc: Fix DRM_MODE_REFLECT_{X,Y} interpretation

Horizontal (DRM_MODE_REFLECT_Y) and vertical (DMR_MODE_REFLECT_Y) flip
were swapped in GScaler driver. Fix this by swapping code for interpreting
them.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_gsc.c

@@ -523,30 +523,30 @@ static void gsc_src_set_transf(struct gsc_context *ctx, unsigned int rotation)
 
 	switch (degree) {
 	case DRM_MODE_ROTATE_0:
-		if (rotation & DRM_MODE_REFLECT_Y)
-			cfg |= GSC_IN_ROT_XFLIP;
 		if (rotation & DRM_MODE_REFLECT_X)
+			cfg |= GSC_IN_ROT_XFLIP;
+		if (rotation & DRM_MODE_REFLECT_Y)
 			cfg |= GSC_IN_ROT_YFLIP;
 		break;
 	case DRM_MODE_ROTATE_90:
 		cfg |= GSC_IN_ROT_90;
-		if (rotation & DRM_MODE_REFLECT_Y)
-			cfg |= GSC_IN_ROT_XFLIP;
 		if (rotation & DRM_MODE_REFLECT_X)
+			cfg |= GSC_IN_ROT_XFLIP;
+		if (rotation & DRM_MODE_REFLECT_Y)
 			cfg |= GSC_IN_ROT_YFLIP;
 		break;
 	case DRM_MODE_ROTATE_180:
 		cfg |= GSC_IN_ROT_180;
-		if (rotation & DRM_MODE_REFLECT_Y)
-			cfg &= ~GSC_IN_ROT_XFLIP;
 		if (rotation & DRM_MODE_REFLECT_X)
+			cfg &= ~GSC_IN_ROT_XFLIP;
+		if (rotation & DRM_MODE_REFLECT_Y)
 			cfg &= ~GSC_IN_ROT_YFLIP;
 		break;
 	case DRM_MODE_ROTATE_270:
 		cfg |= GSC_IN_ROT_270;
-		if (rotation & DRM_MODE_REFLECT_Y)
-			cfg &= ~GSC_IN_ROT_XFLIP;
 		if (rotation & DRM_MODE_REFLECT_X)
+			cfg &= ~GSC_IN_ROT_XFLIP;
+		if (rotation & DRM_MODE_REFLECT_Y)
 			cfg &= ~GSC_IN_ROT_YFLIP;
 		break;
 	}