usb: musb: move usb_phy_generic_{un,}register calls to probe()/remove()

This patch is in preparation to supporting
calling those functions multiple times.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --cc drivers/usb/musb/am35x.c
Simple merge

diff --cc drivers/usb/musb/blackfin.c
Simple merge

diff --cc drivers/usb/musb/da8xx.c
Simple merge

diff --cc drivers/usb/musb/davinci.c
Simple merge

diff --cc drivers/usb/musb/tusb6010.c
Simple merge