BABBLE and RESET share the same interrupt. The interrupt
is considered to be RESET if MUSB is in peripheral mode and
as a BABBLE if MUSB is in HOST mode.

Handle babble condition iff MUSB is in HOST mode.
Signed-off-by: NGeorge Cherian <george.cherian@ti.com>
Tested-by: NBin Liu <b-liu@ti.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>