Staging: rtl8723bs: Remove typedef in struct sdio_data

Remove typedef in struct sdio_data and make the respective changes in
associated files, 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>