usb: move CONFIG_USB_EHCI_MX7 to Kconfig

Create an entry for "config USB_EHCI_MX7" in Kconfig and
switch over to it for all boards.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>

configs/mx7dsabresd_defconfig

@@ -29,6 +29,7 @@ CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
 CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_GADGET=y
 CONFIG_CI_UDC=y
 CONFIG_USB_GADGET_DOWNLOAD=y

configs/warp7_defconfig

@@ -22,4 +22,6 @@ CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
+CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
 CONFIG_OF_LIBFDT=y

drivers/usb/host/Kconfig

@@ -74,6 +74,13 @@ config USB_EHCI_MX6
 	---help---
 	  Enables support for the on-chip EHCI controller on i.MX6 SoCs.
 
+config USB_EHCI_MX7
+	bool "Support for i.MX7 on-chip EHCI USB controller"
+	depends on ARCH_MX7
+	default y
+	---help---
+	  Enables support for the on-chip EHCI controller on i.MX7 SoCs.
+
 config USB_EHCI_MSM
 	bool "Support for Qualcomm on-chip EHCI USB controller"
 	depends on DM_USB

include/configs/mx7dsabresd.h

@@ -237,8 +237,6 @@
 #define CONFIG_MMCROOT			"/dev/mmcblk0p2"  /* USDHC1 */
 
 /* USB Configs */
-#define CONFIG_USB_EHCI
-#define CONFIG_USB_EHCI_MX7
 #define CONFIG_USB_STORAGE
 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET
 #define CONFIG_USB_HOST_ETHER

include/configs/warp7.h

@@ -114,8 +114,6 @@
 #define CONFIG_MMCROOT			"/dev/mmcblk2p2"
 
 /* USB Configs */
-#define CONFIG_USB_EHCI
-#define CONFIG_USB_EHCI_MX7
 #define CONFIG_USB_STORAGE
 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET