accel/ivpu: Validate scatter-gather size against buffer size

accel/ivpu: Validate scatter-gather size against buffer size

Validate scatter-gather table size matches buffer object size before
mapping. Break mapping early if the table exceeds buffer size to
prevent overwriting existing mappings. Also validate the table is
not smaller than buffer size to avoid unmapped regions that trigger
MMU translation faults.

Log error and fail mapping operation on size mismatch to prevent
data corruption from mismatched host memory locations and NPU
addresses. Unmap any partially mapped buffer on failure.

Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Link: https://patch.msgid.link/20251215070933.520377-1-karol.wachowski@linux.intel.com