drm/amdgpu/pm: add EnableGfxImu message dummy map for SMU IP v13.0.4

The SMU needs this message to trigger IMU initialization.
Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h

@@ -233,7 +233,8 @@
 	__SMU_DUMMY_MAP(Spare0),                  \
 	__SMU_DUMMY_MAP(UnforceGfxVid),           \
 	__SMU_DUMMY_MAP(HeavySBR),			\
-	__SMU_DUMMY_MAP(SetBadHBMPagesRetiredFlagsPerChannel),
+	__SMU_DUMMY_MAP(SetBadHBMPagesRetiredFlagsPerChannel), \
+	__SMU_DUMMY_MAP(EnableGfxImu),
 
 #undef __SMU_DUMMY_MAP
 #define __SMU_DUMMY_MAP(type)	SMU_MSG_##type