asus/p2b: Move to EARLY_CBMEM_INIT

Change-Id: I0bf4d6318ade6e931db4f8b1af08db1f9f93c313
Signed-off-by: Keith Hui <buurin@gmail.com>
Reviewed-on: https://review.coreboot.org/22228
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/mainboard/asus/p2b/romstage.c b/src/mainboard/asus/p2b/romstage.c
index 70e4323..ccf39e6 100644
--- a/src/mainboard/asus/p2b/romstage.c
+++ b/src/mainboard/asus/p2b/romstage.c
@@ -24,6 +24,7 @@
 #include <superio/winbond/common/winbond.h>
 #include <superio/winbond/w83977tf/w83977tf.h>
 #include <lib.h>
+#include <cbmem.h>
 
 #define SERIAL_DEV PNP_DEV(0x3f0, W83977TF_SP1)
 
@@ -40,4 +41,5 @@
 
 	enable_smbus();
 	sdram_initialize();
+	cbmem_initialize_empty();
 }