gpu: drm: amd/radeon: Convert printk(KERN_<LEVEL> to pr_<level>

Use a more common logging style.

Miscellanea:

o Coalesce formats and realign arguments
o Neaten a few macros now using pr_<level>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 286d6763..e471c08 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -972,9 +972,7 @@ static int gfx_v7_0_init_microcode(struct amdgpu_device *adev)
 
 out:
 	if (err) {
-		printk(KERN_ERR
-		       "gfx7: Failed to load firmware \"%s\"\n",
-		       fw_name);
+		pr_err("gfx7: Failed to load firmware \"%s\"\n", fw_name);
 		release_firmware(adev->gfx.pfp_fw);
 		adev->gfx.pfp_fw = NULL;
 		release_firmware(adev->gfx.me_fw);