Staging: rtl8192e: Fix Sparse warning of restricted __le16 degrades to integer in rtllib_softmac.c

This patch fixes the following Sparse warning in rtllib_softmac.c-
drivers/staging/rtl8192e/rtllib_softmac.c:230:19: warning: restricted __le16 degrades to integer

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>