power/reset: brcmstb: Register with kernel restart handler
power/reset: brcmstb: Register with kernel restart handler

Register with kernel restart handler instead of setting arm_pm_restart directly.

Cc: Marc Carino <270a2ca9f82c73b99e54d9d0abd71c88d836fc14@gmail.com>
Cc: Brian Norris <ac73eed4b8a8c9127255a2696c52b2e7503720b8@gmail.com>
Signed-off-by: Guenter Roeck <ba324ca7b1c77fc20bb970d5aff6eea9377918a5@roeck-us.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs