staging: wilc1000: rename tWILCpfRemainOnChanExpired

This patch renames tWILCpfRemainOnChanExpired to wilc_remain_on_chan_expired.

Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Tony Cho <tony.cho@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>