x86, 32-bit: SRAT fix

we were adding reserved BIOS ranges as general memory as well => not good.

solves this crash:

[   20.068075] hostname used greatest stack depth: 6464 bytes left
[   20.121404] BUG: unable to handle kernel <1>BUG: unable to handle kernel NULL pointer dereference at 00000b8c
[   20.121404] IP: [<c01160ae>] kmap_atomic_prot+0x2d/0x1c3
[   20.121404] *pdpt = 00000000367eb001 *pde = 0000000000000000
[   20.121404] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[   20.121404]
[   20.121404] Pid: 2061, comm: rc.sysinit Not tainted (2.6.26-rc3 #2440)
[   20.121404] EIP: 0060:[<c01160ae>] EFLAGS: 00010206 CPU: 0
[   20.121404] EIP is at kmap_atomic_prot+0x2d/0x1c3

Signed-off-by: Ingo Molnar <mingo@elte.hu>