drm/radeon: Do not use deprecated drm log API

drm/radeon: Do not use deprecated drm log API

Replace deprecated DRM_DEBUG_KMS_RATELIMITED() and DRM_ERROR()
with proper APIs.

v2: replace pr_err with dev_err(Alex).

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230117180417.21066-1-nirmoy.das@intel.com
Signed-off-by: Christian König <christian.koenig@amd.com>