ANDROID: Add vendor hook for task exiting routine

Currently, there are various global init exit issues encountered
on Andriod/linux system. It's hard to debug these issues on product
environment without a usable coredump.

For example, it's hard to get the root cause why global init task exited from the below kmsg:
[ 4.696032][T400001] e2fsck: /dev/block/by-name/metadata: clean, 35/8192 files, 2083/8192 blocks
[ 4.696783][T500326] [bq27z561] fg_debug_dump_regs: slave_dump:Reg[0x0073] = 0x05C5
[ 4.700583][T400001] EXT4-fs (sdc17): mounted filesystem with ordered data mode. Opts: discard
[ 4.706445][T400001] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f0000
[ 4.706459][T400001] CPU: 4 PID: 1 Comm: init Tainted: G S W 5.10.136-android12-9-00005-gf9a66cbe7091-ab9177899 #1
[ 4.706464][T400001] Hardware name: MT6983Z/TCZA (DT)
[ 4.706469][T400001] Call trace:
[ 4.706482][T400001] dump_backtrace.cfi_jt+0x0/0x8
[ 4.706493][T400001] dump_stack_lvl+0xc4/0x140
[ 4.706504][T400001] panic+0x178/0x464
[ 4.706511][T400001] do_exit+0xb30/0xf9c
[ 4.706517][T400001] do_group_exit+0x130/0x1c8
[ 4.706523][T400001] do_group_exit+0x0/0x1c8
[ 4.706529][T400001] __do_sys_exit_group+0x0/0x18
[ 4.706535][T400001] __se_sys_exit_group+0x0/0x14
[ 4.706543][T400001] el0_svc_common+0xd4/0x270
[ 4.706551][T400001] el0_svc+0x28/0x88
[ 4.706559][T400001] el0_sync_handler+0x8c/0xf0
[ 4.706567][T400001] el0_sync+0x1b4/0x1c0

Add hook for task exiting routine, while will be helpful for OEMs to
get the reason of any exiting task to be noticed such as dump last
exit thread executable sections and registers info.

Bug: 324013972
Link: https://lore.kernel.org/lkml/20231110032043.34516-1-qiwu.chen@transsion.com/T/


Change-Id: Ibb7c9012af18b99a1bb458d236f166e6450241c3
Signed-off-by: qiwu.chen <qiwu.chen@transsion.com>