intel: Clean up check_pbo_format to ignore internalFormat.

All that matters here is the format of the texture, not the
internalformat (which might mean various different pixel formats).  In
one case, the pbo upload for MESA_FORMAT_YCBCR would have swapped the
channels for MESA_FORMAT_YCBCR_REV.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/mesa/drivers/dri/intel/intel_tex_image.c

@@ -123,33 +123,22 @@ intel_miptree_create_for_teximage(struct intel_context *intel,
 /* There are actually quite a few combinations this will work for,
  * more than what I've listed here.
  */
-static GLboolean
-check_pbo_format(GLint internalFormat,
-                 GLenum format, GLenum type,
+static bool
+check_pbo_format(GLenum format, GLenum type,
                  gl_format mesa_format)
 {
-   switch (internalFormat) {
-   case 4:
-   case GL_RGBA:
-   case GL_RGBA8:
-      return (format == GL_BGRA &&
-              (type == GL_UNSIGNED_BYTE ||
-               type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
-              mesa_format == MESA_FORMAT_ARGB8888);
-   case 3:
-   case GL_RGB:
-      return (format == GL_RGB &&
-              type == GL_UNSIGNED_SHORT_5_6_5 &&
-              mesa_format == MESA_FORMAT_RGB565);
-   case 1:
-   case GL_LUMINANCE:
-      return (format == GL_LUMINANCE &&
-	      type == GL_UNSIGNED_BYTE &&
-	      mesa_format == MESA_FORMAT_L8);
-   case GL_YCBCR_MESA:
+   switch (mesa_format) {
+   case MESA_FORMAT_ARGB8888:
+      return (format == GL_BGRA && (type == GL_UNSIGNED_BYTE ||
+				    type == GL_UNSIGNED_INT_8_8_8_8_REV));
+   case MESA_FORMAT_RGB565:
+      return (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5);
+   case MESA_FORMAT_L8:
+      return (format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE);
+   case MESA_FORMAT_YCBCR:
       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
    default:
-      return GL_FALSE;
+      return false;
    }
 }
 
@@ -184,8 +173,7 @@ try_pbo_upload(struct intel_context *intel,
       return false;
    }
 
-   if (!check_pbo_format(intelImage->base.Base.InternalFormat, format,
-			 type, intelImage->base.Base.TexFormat)) {
+   if (!check_pbo_format(format, type, intelImage->base.Base.TexFormat)) {
       DBG("%s: format mismatch (upload to %s with format 0x%x, type 0x%x)\n",
 	  __FUNCTION__, _mesa_get_format_name(intelImage->base.Base.TexFormat),
 	  format, type);