Staging: rtl8723bs: Remove typedef in struct ieee_param_ex

Remove typedef in struct ieee_param_ex, as the struct that
has elements that can reasonably be directly accessed should
never be a typedef.

Signed-off-by: Madhumitha Prabakaran <madhumithabiw@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>