Fix mptable MPCONFIG_SIGNATURE incorrect signature.
diff --git a/src/mptable.h b/src/mptable.h
index 68f5e65..d8fecb3 100644
--- a/src/mptable.h
+++ b/src/mptable.h
@@ -16,7 +16,7 @@
     u8 reserved[3];
 };
 
-#define MPCONFIG_SIGNATURE 0x50434d50  // "PCMP"
+#define MPCONFIG_SIGNATURE 0x504d4350  // "PCMP"
 
 struct mptable_config_s {
     u32 signature;