asus/{p2b-x,p3b-f},intel/i440bx: Move mainboard_romstage_entry()

Change-Id: I3598f548c2d122906fda09c85b5a1c82b0da993b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38255
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/intel/i82371eb/early_smbus.c b/src/southbridge/intel/i82371eb/early_smbus.c
index 917a3b4..f69cb93 100644
--- a/src/southbridge/intel/i82371eb/early_smbus.c
+++ b/src/southbridge/intel/i82371eb/early_smbus.c
@@ -23,6 +23,12 @@
 #include <device/smbus_host.h>
 #include "i82371eb.h"
 
+void i82371eb_early_init(void)
+{
+	enable_smbus();
+	enable_pm();
+}
+
 void enable_smbus(void)
 {
 	pci_devfn_t dev;