radv: enable POLARIS12 support.

This just adds the chip in the right places.

We don't set the partial_vs_wave workaround, as radeonsi
doesn't, but have to confirm it's not required.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Cc: "17.1" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/amd/common/ac_llvm_util.c

@@ -108,6 +108,7 @@ static const char *ac_get_llvm_processor_name(enum radeon_family family)
 	case CHIP_POLARIS10:
 		return "polaris10";
 	case CHIP_POLARIS11:
+	case CHIP_POLARIS12:
 		return "polaris11";
 	default:
 		return "";