drm/amdgpu/nbio: improve code indentation and alignment

General code indentation and alignment changes such as replace spaces
by tabs or align function arguments as per the coding style
guidelines. Issue reported by checkpatch script.
Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c

@@ -114,7 +114,7 @@ static void nbio_v6_1_enable_doorbell_selfring_aperture(struct amdgpu_device *ad
 static void nbio_v6_1_ih_doorbell_range(struct amdgpu_device *adev,
 					bool use_doorbell, int doorbell_index)
 {
-	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0 , mmBIF_IH_DOORBELL_RANGE);
+	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE);
 
 	if (use_doorbell) {
 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);

drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c

@@ -126,7 +126,7 @@ static void nbio_v7_0_enable_doorbell_selfring_aperture(struct amdgpu_device *ad
 static void nbio_v7_0_ih_doorbell_range(struct amdgpu_device *adev,
 					bool use_doorbell, int doorbell_index)
 {
-	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0 , mmBIF_IH_DOORBELL_RANGE);
+	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE);
 
 	if (use_doorbell) {
 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);