gpu: nvgpu: merge error reporting apis

In DRIVE 6.0, NvGPU is allowed to report only 32-bit metadata to
Safety_Services. So, there is no need to have distinct APIs for
reporting errors from units like GR, MM, FIFO to SDL unit. All
these error reporting APIs will be replaced with a single API. To
meet this objective, this patch does the following changes:
- Replaces nvgpu_report_*_err with nvgpu_report_err_to_sdl.
- Removes the reporting of error messages.
- Replaces nvgpu_log() with nvgpu_err(), for error reporting.
- Removes error reporting to Safety_Services from nvgpu_report_*_err.

However, nvgpu_report_*_err APIs and their related files are not
removed. During the creation of nvgpu-mon, they will be moved under
nvgpu-rm, in debug builds.

Note:
- There will be a follow-up patch to fix error IDs.
- As discussed in https://nvbugs/3491596 (comment #12), the high
level expectation is to report only errors.

JIRA NVGPU-7450

Change-Id: I428f2a9043086462754ac36a15edf6094985316f
Signed-off-by: Rajesh Devaraj <rdevaraj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2662590
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/hal/fifo/fifo_intr_gk20a.c

@@ -142,8 +142,7 @@ static u32 gk20a_fifo_intr_handle_errors(struct gk20a *g, u32 fifo_intr)
 	}
 
 	if ((fifo_intr & fifo_intr_0_fb_flush_timeout_pending_f()) != 0U) {
-		nvgpu_report_host_err(g, NVGPU_ERR_MODULE_HOST,
-				0, GPU_HOST_PFIFO_FB_FLUSH_TIMEOUT_ERROR, 0);
+		nvgpu_report_err_to_sdl(g, GPU_HOST_PFIFO_FB_FLUSH_TIMEOUT_ERROR);
 		nvgpu_err(g, "fifo fb flush timeout error");
 		handled |= fifo_intr_0_fb_flush_timeout_pending_f();
 	}