staging: vt6656: clean up s_nsBulkInUsbIoCompleteRead

Clean up white space and camel case.

Camel case changes
pDevice -> priv
pRCB -> rcb
bReAllocSkb -> re_alloc_skb

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>