usb: gadget: fsl_mxc_udc: do not depend on grouped clocks
usb: gadget: fsl_mxc_udc: do not depend on grouped clocks

With the new common clock infrastructure, the following clocks should be
used on i.MX drivers: ipg, per and ahb.

Adapt fsl_mxc_udc to follow this new behaviour to fix the following probe error:

Freescale High-Speed USB SOC Device Controller driver (Apr 20, 2007)
fsl-usb2-udc fsl-usb2-udc: clk_get("usb") failed
fsl-usb2-udc: probe of fsl-usb2-udc failed with error -2

Reported-by: Christoph Fritz <86a7a13253fa922ff6b13ad44afce588c8c37221@googlemail.com>
Signed-off-by: Fabio Estevam <679188261afeb60eb822cd934fd7b46a48ddd743@freescale.com>
Acked-by: Sascha Hauer <c00cbc2b736c26791a3822db86f8796fe9efff67@pengutronix.de>
Signed-off-by: Felipe Balbi <94dddeeef08b001e003cce128ddc162a4e2c6cd2@ti.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs