Increase the PPIN input length to 16 bytes

Clemente BIOS specification requirement:
change the length to 16 bytes.

Change-Id: I5eee4179f3711937eeaa2fa0566018c9f9df4831
Signed-off-by: Alex Wang <alex.ts.wang@fii-foxconn.com>
diff --git a/include/oemcommands.hpp b/include/oemcommands.hpp
index aedd592..ea9f6e8 100644
--- a/include/oemcommands.hpp
+++ b/include/oemcommands.hpp
@@ -96,7 +96,7 @@
 #define MAX_BUF 50
 
 #define BMC_POS 0
-#define SIZE_CPU_PPIN 8
+#define SIZE_CPU_PPIN 16
 #define SIZE_BOOT_ORDER 6
 #define BOOT_MODE_UEFI 0x01
 #define BOOT_MODE_CMOS_CLR 0x02