microblaze: Do not handle watchdog and gpio in SPL

watchdog and gpio are not validated for SPL that's why do not use them.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/include/configs/microblaze-generic.h b/include/configs/microblaze-generic.h
index 8db6b55..f93861d 100644
--- a/include/configs/microblaze-generic.h
+++ b/include/configs/microblaze-generic.h
@@ -97,8 +97,10 @@
 #if defined(XILINX_WATCHDOG_BASEADDR) && defined(XILINX_WATCHDOG_IRQ)
 # define CONFIG_WATCHDOG_BASEADDR	XILINX_WATCHDOG_BASEADDR
 # define CONFIG_WATCHDOG_IRQ		XILINX_WATCHDOG_IRQ
-# define CONFIG_HW_WATCHDOG
-# define CONFIG_XILINX_TB_WATCHDOG
+# ifndef CONFIG_SPL_BUILD
+#  define CONFIG_HW_WATCHDOG
+#  define CONFIG_XILINX_TB_WATCHDOG
+# endif
 #endif
 
 #if !defined(CONFIG_OF_CONTROL) || \