drm/amdgpu: updated host to psp mailbox cmd (v2)

added host to psp cmd for register list

v2: update to new interface (Alex)
Reviewed-by: NHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: NJohn Clements <john.clements@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/psp_gfx_if.h

@@ -235,6 +235,7 @@ enum psp_gfx_fw_type {
 	GFX_FW_TYPE_SDMA6                           = 56,   /* SDMA6                    MI      */
 	GFX_FW_TYPE_SDMA7                           = 57,   /* SDMA7                    MI      */
 	GFX_FW_TYPE_VCN1                            = 58,   /* VCN1                     MI      */
+	GFX_FW_TYPE_REG_LIST                        = 67,   /* REG_LIST                 MI      */
 	GFX_FW_TYPE_MAX
 };