staging: wilc1000: removed typedef from enum BSSTYPE_T

This patch removes typedef from enum BSSTYPE_T and
rename it to bss_types.

It fixes "WARNING: do not add new typdefs" warning
reported by checkpatch.pl.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>