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>
diff --git a/configs/mx7dsabresd_defconfig b/configs/mx7dsabresd_defconfig
index 09716a7..9dbc9c7 100644
--- a/configs/mx7dsabresd_defconfig
+++ b/configs/mx7dsabresd_defconfig
@@ -29,6 +29,7 @@
 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
diff --git a/configs/warp7_defconfig b/configs/warp7_defconfig
index ad4fbbf..bd9b5bb 100644
--- a/configs/warp7_defconfig
+++ b/configs/warp7_defconfig
@@ -22,4 +22,6 @@
 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
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 89580cc..7992cb4 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -74,6 +74,13 @@
 	---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
diff --git a/include/configs/mx7dsabresd.h b/include/configs/mx7dsabresd.h
index ece8a03..cfaf59b 100644
--- a/include/configs/mx7dsabresd.h
+++ b/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
diff --git a/include/configs/warp7.h b/include/configs/warp7.h
index fc0e51a..af39817 100644
--- a/include/configs/warp7.h
+++ b/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