staging: wilc1000: fixes braces {} are not necessary for single statement blocks

This patch fixes the warnings reported by checkpatch.pl
for braces {} are not necessary for single statement blocks

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>