RAS error query support addition for JPEG 2.6

V2: removed unused options and corrected comment format.
Moved register definition to header file.

V3: poison query status check added.
Removed the error query support

V4: Return statement refactored.
Signed-off-by: NMohammad Zafar Ziya <Mohammadzafar.ziya@amd.com>
Reviewed-by: NHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: NTao Zhou <tao.zhou1@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>