r600: add support for valid pixel mode on CF clauses

This just adds support to the assembler for setting the valid
pixel mode on the CF clause.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/gallium/drivers/r600/eg_asm.c

@@ -73,6 +73,7 @@ int eg_bytecode_cf_build(struct r600_bytecode *bc, struct r600_bytecode_cf *cf)
 			bc->bytecode[id++] = S_SQ_CF_WORD0_ADDR(cf->addr >> 1);
 			bc->bytecode[id++] = S_SQ_CF_WORD1_CF_INST(opcode) |
 					S_SQ_CF_WORD1_BARRIER(1) |
+					S_SQ_CF_WORD1_VALID_PIXEL_MODE(cf->vpm) |
 					S_SQ_CF_WORD1_COUNT((cf->ndw / 4) - 1);
 		} else if (cfop->flags & CF_EXP) {
 			/* EXPORT instructions */

src/gallium/drivers/r600/r600_asm.h

@@ -180,6 +180,7 @@ struct r600_bytecode_cf {
 	unsigned			eg_alu_extended;
 	unsigned			barrier;
 	unsigned			end_of_program;
+	unsigned                        vpm;
 	struct list_head		alu;
 	struct list_head		tex;
 	struct list_head		vtx;