freedreno/a5xx: fixed instanced

Add missing bit, now that we know where it is.

Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/src/gallium/drivers/freedreno/a5xx/fd5_emit.c b/src/gallium/drivers/freedreno/a5xx/fd5_emit.c
index 6ef59c8..0aafc4b 100644
--- a/src/gallium/drivers/freedreno/a5xx/fd5_emit.c
+++ b/src/gallium/drivers/freedreno/a5xx/fd5_emit.c
@@ -378,6 +378,7 @@
 			OUT_PKT4(ring, REG_A5XX_VFD_DECODE(j), 2);
 			OUT_RING(ring, A5XX_VFD_DECODE_INSTR_IDX(j) |
 					A5XX_VFD_DECODE_INSTR_FORMAT(fmt) |
+					COND(elem->instance_divisor, A5XX_VFD_DECODE_INSTR_INSTANCED) |
 					0xc0000000);  // XXX
 			OUT_RING(ring, MAX2(1, elem->instance_divisor)); /* VFD_DECODE[j].STEP_RATE */