drm/amdgpu: unify some atombios/atomfirmware scratch reg functions

Now that we use a pointer to the scratch reg start offset,
most of the functions were duplicated.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index a7341d8..79f5e3e 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -25,7 +25,7 @@
 #include <linux/module.h>
 #include <drm/drmP.h>
 #include "amdgpu.h"
-#include "amdgpu_atomfirmware.h"
+#include "amdgpu_atombios.h"
 #include "amdgpu_ih.h"
 #include "amdgpu_uvd.h"
 #include "amdgpu_vce.h"
@@ -392,11 +392,11 @@
 
 static int soc15_asic_reset(struct amdgpu_device *adev)
 {
-	amdgpu_atomfirmware_scratch_regs_engine_hung(adev, true);
+	amdgpu_atombios_scratch_regs_engine_hung(adev, true);
 
 	soc15_gpu_pci_config_reset(adev);
 
-	amdgpu_atomfirmware_scratch_regs_engine_hung(adev, false);
+	amdgpu_atombios_scratch_regs_engine_hung(adev, false);
 
 	return 0;
 }