xive: Fix definition of VC_SCRUB_OFFSET

Off by one on one bit

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

include/xive.h

@@ -204,7 +204,7 @@
 #define  VC_SCRUB_WANT_DISABLE	PPC_BIT(1)
 #define  VC_SCRUB_WANT_INVAL	PPC_BIT(2) /* EQC and SBC only */
 #define  VC_SCRUB_BLOCK_ID	PPC_BITMASK(28,31)
-#define  VC_SCRUB_OFFSET	PPC_BITMASK(41,63)
+#define  VC_SCRUB_OFFSET	PPC_BITMASK(40,63)
 #define X_VC_IVC_CACHE_ENABLE	0x221
 #define VC_IVC_CACHE_ENABLE	0x988
 #define  VC_IVC_CACHE_EN_MASK	PPC_BITMASK(0,15)