drm/amdgpu/gfx: simplify old firmware warning

Put it on one line to avoid whitespace issues when
printing in the log.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -576,8 +576,7 @@ static void gfx_v10_0_check_fw_write_wait(struct amdgpu_device *adev)
 	}
 
 	if (adev->gfx.cp_fw_write_wait == false)
-		DRM_WARN_ONCE("Warning: check cp_fw_version and update it to realize \
-			      GRBM requires 1-cycle delay in cp firmware\n");
+		DRM_WARN_ONCE("CP firmware version too old, please update!");
 }
 
 

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -988,8 +988,7 @@ static void gfx_v9_0_check_fw_write_wait(struct amdgpu_device *adev)
 	    (adev->gfx.mec_feature_version < 46) ||
 	    (adev->gfx.pfp_fw_version < 0x000000b7) ||
 	    (adev->gfx.pfp_feature_version < 46))
-		DRM_WARN_ONCE("Warning: check cp_fw_version and update it to realize \
-			      GRBM requires 1-cycle delay in cp firmware\n");
+		DRM_WARN_ONCE("CP firmware version too old, please update!");
 
 	switch (adev->asic_type) {
 	case CHIP_VEGA10: