usb:hsotg:samsung: Add release function for hsotg device
usb:hsotg:samsung: Add release function for hsotg device

Add release function to prevent kernel warning.
Kfree is performed when all references are gone.

Signed-off-by: Sangwook Lee <52dcf9086cd83188b9edfa0b1ee51f4d62875e2a@linaro.org>
Signed-off-by: Lukasz Majewski <b9e7fec7340b31aada4d612e9bde062018566488@samsung.com>
Signed-off-by: Kyungmin Park <504c23c4986a3760712724894be3105092c27331@samsung.com>
Signed-off-by: Felipe Balbi <94dddeeef08b001e003cce128ddc162a4e2c6cd2@ti.com>

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