[PATCH v2] phy: hi6220: Add missing MFD_SYSCON dependency on HAS_IOMEM

[Krzysztof Kozlowski]

The MFD_SYSCON depends on HAS_IOMEM so when selecting it avoid unmet
direct dependencies.

This fixes warning on allyesconfig on ARCH=um:

warning: (ST_IRQCHIP && HIP04_ETH && STMMAC_PLATFORM && DWMAC_IPQ806X &&
	DWMAC_LPC18XX && DWMAC_ROCKCHIP && DWMAC_SOCFPGA && DWMAC_STI && TI_CPSW
	&& PINCTRL_ROCKCHIP && PINCTRL_DOVE && POWER_RESET_KEYSTONE &&
	S3C2410_WATCHDOG && VIDEO_OMAP3 && VIDEO_S5P_FIMC && USB_XHCI_MTK &&
	RTC_DRV_AT91SAM9 && LPC18XX_DMAMUX && VIDEO_OMAP4 && HWSPINLOCK_QCOM &&
	ATMEL_ST && QCOM_GSBI && PHY_HI6220_USB)
selects MFD_SYSCON which has unmet direct dependencies (HAS_IOMEM)

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>

---
Changes since v1:
1. Remove the comment why HAS_IOMEM dependency was added.
2. Exdended description.
---
 drivers/phy/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index a9727dab9e72..8ad8f91a72e1 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -226,6 +226,7 @@ config PHY_MT65XX_USB3
 config PHY_HI6220_USB
 	tristate "hi6220 USB PHY support"
 	depends on (ARCH_HISI && ARM64) || COMPILE_TEST
+	depends on HAS_IOMEM
 	select GENERIC_PHY
 	select MFD_SYSCON
 	help
-- 
2.5.0