usb: gadget: s3c-hsudc: remove the_controller global
usb: gadget: s3c-hsudc: remove the_controller global

Instead use container_of to retrieve the s3c_hsudc from the
struct usb_gadget pointer.

[ 94dddeeef08b001e003cce128ddc162a4e2c6cd2@ti.com : changed verbose container_of() into
	an already provided helper 'to_hsudc()' ]

Signed-off-by: Heiko Stuebner <9ab5f52a1ca0bcf4f70d6d9008e02f6134b5b8f2@sntech.de>
Signed-off-by: Felipe Balbi <94dddeeef08b001e003cce128ddc162a4e2c6cd2@ti.com>

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