staging: r8188eu: Fix sparse warnings in rtl_p2p.c

Sparse displays the following:

  CHECK   drivers/staging/rtl8188eu/core/rtw_p2p.c
drivers/staging/rtl8188eu/core/rtw_p2p.c:162:15: warning: incorrect type in assignment (different base types)
drivers/staging/rtl8188eu/core/rtw_p2p.c:162:15:    expected unsigned short *fctrl
drivers/staging/rtl8188eu/core/rtw_p2p.c:162:15:    got restricted __le16 *<noident>
drivers/staging/rtl8188eu/core/rtw_p2p.c:221:15: warning: incorrect type in assignment (different base types)
drivers/staging/rtl8188eu/core/rtw_p2p.c:221:15:    expected unsigned short *fctrl
drivers/staging/rtl8188eu/core/rtw_p2p.c:221:15:    got restricted __le16 *<noident>
drivers/staging/rtl8188eu/core/rtw_p2p.c:292:15: warning: incorrect type in assignment (different base types)
drivers/staging/rtl8188eu/core/rtw_p2p.c:292:15:    expected unsigned short *fctrl
drivers/staging/rtl8188eu/core/rtw_p2p.c:292:15:    got restricted __le16 *<noident>
drivers/staging/rtl8188eu/core/rtw_p2p.c:371:15: warning: incorrect type in assignment (different base types)
drivers/staging/rtl8188eu/core/rtw_p2p.c:371:15:    expected unsigned short *fctrl
drivers/staging/rtl8188eu/core/rtw_p2p.c:371:15:    got restricted __le16 *<noident>

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>