arm: support restart through restart handler call chain

The kernel core now supports a restart handler call chain for system
restart functions.

With this change, the arm_pm_restart callback is now optional, so drop its
initialization and check if it is set before calling it.  Only call the
kernel restart handler if arm_pm_restart is not set.

Signed-off-by: Guenter Roeck <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Acked-by: Heiko Stuebner <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Dmitry Eremin-Solenikov <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jonas Jensen <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Russell King <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Tomasz Figa <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Wim Van Sebroeck <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions