ARM: shmobile: Enable ARM_PATCH_PHYS_VIRT

Adjust mach-shmobile to add a select for CONFIG_ARM_PATCH_PHYS_VIRT
and at the same time remove NEED_MACH_MEMORY_H.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>