Fixed more BGRA failures

BGRA8 was missing from the list of valid internal formats

Change-Id: Id5c08267e04cefaf621edecb963d65a45d40e041
Reviewed-on: https://swiftshader-review.googlesource.com/16128
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/OpenGL/libGLESv2/utilities.cpp b/src/OpenGL/libGLESv2/utilities.cpp
index 2f13d3f..2318057 100644
--- a/src/OpenGL/libGLESv2/utilities.cpp
+++ b/src/OpenGL/libGLESv2/utilities.cpp
@@ -896,6 +896,7 @@
 			case GL_RGB565:
 			case GL_RGB8:
 			case GL_RGBA8:
+			case GL_BGRA8_EXT:   // GL_APPLE_texture_format_BGRA8888
 			case GL_R16F:
 			case GL_RG16F:
 			case GL_R11F_G11F_B10F: