staging: wilc1000: rename pstrHostIFSetChan of fuction Handle_SetChannel

This patch renames pstrHostIFSetChan of fuction Handle_SetChannel to hif_set_ch
to avoid CamelCase naming convention.

Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>