usb: musb: core: remove unnecessary reg access from resume IRQ
when musb is operating as host and a remote wakeup fires up, a resume interrupt will be raised. At that point SUSPENDM bit is automatically cleared and RESUME bit is automatically set. Remove those two from IRQ handler. Tested-by: NBin Liu <b-liu@ti.com> Signed-off-by: NFelipe Balbi <balbi@ti.com>
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