Penang: resolve kasan panic

Penang:
KASAN: slab-out-of-bounds in qrtr_endpoint_register

Change-Id: I7542a0f2af0ceb0fdd04291b86795ba942ffe8d7
Signed-off-by: YangYi <yangyi31@motorola.com>
Reviewed-on: https://gerrit.mot.com/2413704


SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Yuchang Guo <guoyc1@lenovo.com>
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key