[PATCH] i386: fix long long cast in pte macro

[PATCH] i386: fix long long cast in pte macro

From PaX Team :
the current idiom used for initializing a structure of two unsigned longs
from unsigned long long is wrong, it effectively loses the upper 32 bits
which in this particular case could turn a non-executable PTE into an
executable one on NX capable i386 (i.e., it's a potential security bug).
fortunately the in-tree users in 2.4 (drivers/char/drm-4.0/ffb_drv.c
and arch/mips/baget/baget.c) are not affected.

Added the (unsigned long long) cast as suggested by Ralf Baechle to
silent gcc when shifting right 32-bit arguments.

Acked-by: Willy Tarreau <w@1wt.eu>