ARM: shmobile: Move r8a7790 reset code to pm-r8a7790.c

ARM: shmobile: Move r8a7790 reset code to pm-r8a7790.c

Move r8a7790 specific reset vector setup code from the
SMP glue code to PM code. This makes the code one step
closer to allow PM operations such as Suspend-to-RAM
in the case when SMP is disabled in the kernel config.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
[horms+renesas@verge.net.au: updated for recent #include changes]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit 07ce9dfaf477e0d16d40faea251898d5a38d8051)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Conflicts:
	arch/arm/mach-shmobile/pm-r8a7790.c