drm/amdgpu/gfx10: new approach to load gfx10 me fw (v4)

gfx10 allows to only upload me jumptable while save the whole
me image at gtt memory.

v2: program CP_ME_IC_BASE_CNTL to default value
v3: switch to use amdgpu_bo_create_reserved to create me fw bo
v4: split common code from gfx10 code
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -207,12 +207,19 @@ struct amdgpu_ce {
 	uint32_t			*ce_fw_ptr;
 };
 
+struct amdgpu_me {
+	struct amdgpu_bo		*me_fw_obj;
+	uint64_t			me_fw_gpu_addr;
+	uint32_t			*me_fw_ptr;
+};
+
 struct amdgpu_gfx {
 	struct mutex			gpu_clock_mutex;
 	struct amdgpu_gfx_config	config;
 	struct amdgpu_rlc		rlc;
 	struct amdgpu_pfp		pfp;
 	struct amdgpu_ce		ce;
+	struct amdgpu_me		me;
 	struct amdgpu_mec		mec;
 	struct amdgpu_kiq		kiq;
 	struct amdgpu_scratch		scratch;