phy: ingenic: depend on HAS_IOMEM

phy: ingenic: depend on HAS_IOMEM

The driver uses devm_ioremap_resource() which will not be built if
CONFIG_HAS_IOMEM is not selected, so add depends on it to fix the build
failure on few archs

s390-linux-ld: drivers/phy/ingenic/phy-ingenic-usb.o: in function `ingenic_usb_phy_probe':
>> phy-ingenic-usb.c:(.text+0xb66): undefined reference to `devm_platform_ioremap_resource'

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20201208045300.3637026-1-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>