musb_hdrc: Fix host suspend handling, remove earlier hacks

If A-cable was connected and a gadget module was reloaded, root hub
suspend would fail.

This the problem by managing musb inactive state better. The patch also adds
more debug info for cases where suspend is attempted in active state.

Signed-off-by: Tony Lindgren <tony@atomide.com>

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

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

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