spmi: Add dependency on HAS_IOMEM

Not all architectures have io memory.

Fixes:
drivers/built-in.o: In function `spmi_pmic_arb_probe':
spmi-pmic-arb.c:(.text+0x1ed399): undefined reference to `devm_ioremap_resource'

Change-Id: Ie1d7a64fa5c984efb13d7fd0efaffcecf0895b42
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-commit: 61a590fa67ac3c897e7c21fd75a5c85a4671b384
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>