staging: rtl8723bs: use mac_pton()

Use mac_pton() instead of custom approach.
Remove the now unused hex2num_i() and hwaddr_aton_i().

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed