st/mesa: skip glDrawPixels/glBitmap-related code for ES build

Fixes http://bugs.freedesktop.org/show_bug.cgi?id=32560

src/mesa/state_tracker/st_program.c

@@ -409,6 +409,7 @@ st_translate_fragment_program(struct st_context *st,
 
    assert(!(key->bitmap && key->drawpixels));
 
+#if FEATURE_drawpix
    if (key->bitmap) {
       /* glBitmap drawing */
       struct gl_fragment_program *fp;
@@ -434,6 +435,7 @@ st_translate_fragment_program(struct st_context *st,
       }
       stfp = st_fragment_program(fp);
    }
+#endif
 
    if (!stfp->tgsi.tokens) {
       /* need to translate Mesa instructions to TGSI now */