feat(intel): restructure watchdog

This patch is to restructure watchdog.
Move platform dependent MACROs to individual platform socfpga_plat_def.
Common watchdog code file and header file will remain for those common
declaration.

Change-Id: Ibb640f08ac313bbad6d9295596cb8ff26e3e626d
Signed-off-by: Sieu Mun Tang <sieu.mun.tang@intel.com>
diff --git a/plat/intel/soc/common/drivers/wdt/watchdog.h b/plat/intel/soc/common/drivers/wdt/watchdog.h
index 4ee4cff..940ebf3 100644
--- a/plat/intel/soc/common/drivers/wdt/watchdog.h
+++ b/plat/intel/soc/common/drivers/wdt/watchdog.h
@@ -7,11 +7,8 @@
 #ifndef CAD_WATCHDOG_H
 #define CAD_WATCHDOG_H
 
-#if PLATFORM_MODEL == PLAT_SOCFPGA_AGILEX5
-#define WDT_BASE			(0x10D00200)
-#else
-#define WDT_BASE			(0xFFD00200)
-#endif
+#include "socfpga_plat_def.h"
+
 #define WDT_REG_SIZE_OFFSET		(0x4)
 #define WDT_MIN_CYCLES			(65536)
 #define WDT_PERIOD			(20)