ARM: keystone: remove redundant depends on ARM_PATCH_PHYS_VIRT
KeyStone is Multi-platform. ARM_PATCH_PHYS_VIRT is already select'ed
by ARCH_MULTIPLATFORM.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>