usb: hsotg: samsung: Replace endpoint specific locks with a global lock
The endpoint specific locks are replaced with a global lock. This is crucial for running s3c-hsotg driver on a SMP SoC. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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