sb/intel/i82801gx: Get rid of device_t

Use of device_t has been abandoned in ramstage.

Change-Id: Iccddf3140fd94c2e5a246fe2839573f5dd387147
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26245
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/southbridge/intel/i82801gx/i82801gx.c b/src/southbridge/intel/i82801gx/i82801gx.c
index aab674b..eb0583f 100644
--- a/src/southbridge/intel/i82801gx/i82801gx.c
+++ b/src/southbridge/intel/i82801gx/i82801gx.c
@@ -20,7 +20,7 @@
 #include "i82801gx.h"
 #include "sata.h"
 
-void i82801gx_enable(device_t dev)
+void i82801gx_enable(struct device *dev)
 {
 	u32 reg32;