aspeed/scu: fix SCU region size

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 1480434248-27138-12-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/misc/aspeed_scu.c

@@ -86,7 +86,7 @@
 #define BMC_DEV_ID           TO_REG(0x1A4)
 
 #define PROT_KEY_UNLOCK 0x1688A8A8
-#define SCU_IO_REGION_SIZE 0x20000
+#define SCU_IO_REGION_SIZE 0x1000
 
 static const uint32_t ast2400_a0_resets[ASPEED_SCU_NR_REGS] = {
      [SYS_RST_CTRL]    = 0xFFCFFEDCU,