drm/radeon/cik: Add support for new ucode format (v5)

This adds CIK support for the new ucode format.

v2: add size validation, integrate debug info
v3: add support for MEC2 on KV
v4: fix typos
v4: update to latest format

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index b1848d4..7561b13 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2302,6 +2302,7 @@
 	const struct firmware *mc_fw;	/* NI MC firmware */
 	const struct firmware *ce_fw;	/* SI CE firmware */
 	const struct firmware *mec_fw;	/* CIK MEC firmware */
+	const struct firmware *mec2_fw;	/* KV MEC2 firmware */
 	const struct firmware *sdma_fw;	/* CIK SDMA firmware */
 	const struct firmware *smc_fw;	/* SMC firmware */
 	const struct firmware *uvd_fw;	/* UVD firmware */