Staging: rtl8192e: Fix Sparse warning of cast to restricted __le32 in rtl_core.c

This patch fixes the following sparse warnings in rtl8192e/rtl_core.c-

drivers/staging/rtl8192e/rtl8192e/rtl_core.c:1846:46: warning: cast to restricted __le32
drivers/staging/rtl8192e/rtl8192e/rtl_core.c:1951:46: warning: cast to restricted __le32
drivers/staging/rtl8192e/rtl8192e/rtl_core.c:2199:50: warning: cast to restricted __le32

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>