x86: amd opteron TOM2 mask val fix

there is a typo in the mask value, need to remove that extra 0,
to avoid 4bit clearing.

Signed-off-by: Yinghal Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/cpu/mtrr/generic.c

@@ -233,7 +233,7 @@ void __init get_mtrr_state(void)
 		mtrr_tom2 = high;
 		mtrr_tom2 <<= 32;
 		mtrr_tom2 |= low;
-		mtrr_tom2 &= 0xffffff8000000ULL;
+		mtrr_tom2 &= 0xffffff800000ULL;
 	}
 	if (mtrr_show) {
 		int high_width;