ARM: rmobile: Enable EHCI generic on Salvator-X

Enable the EHCI generic driver, which is superior to ad-hoc SoC specific one.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

configs/r8a7795_salvator-x_defconfig

@@ -34,5 +34,6 @@ CONFIG_SCIF_CONSOLE=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
 CONFIG_USB_STORAGE=y
 CONFIG_SMBIOS_MANUFACTURER=""

configs/r8a7796_salvator-x_defconfig

@@ -35,5 +35,6 @@ CONFIG_SCIF_CONSOLE=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
 CONFIG_USB_STORAGE=y
 CONFIG_SMBIOS_MANUFACTURER=""