staging: rtl8723bs: Fix incorrect type in declaration

Fix incorrect type in declaration to solve the warnings 'incorrect
type in argument 2' in the rtw_get_wpa_ie and rtw_get_wpa_ie function
calls, as both expect the same variable in argument 2 with the
type int *.
Issue found by Sparse.

Signed-off-by: Javier F. Arias <jarias.linux@gmail.com>
Link: https://lore.kernel.org/r/20191009231953.GA8774@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>