staging: brcm80211: move sdio related suspend/resume code to bus interface layer

In fullmac some SDIO configurations should be done in suspend/resume
routine. It was placed under pm ops in wl_cfg80211.c which is
inappropriate. This patchs move them to sdio layer.

Signed-off-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>