blackfin: If none ADI_GPIOX macro is defined, use ADI_GPIO1 as default

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
diff --git a/arch/blackfin/include/asm/gpio.h b/arch/blackfin/include/asm/gpio.h
index 376ec02..6ebcf01 100644
--- a/arch/blackfin/include/asm/gpio.h
+++ b/arch/blackfin/include/asm/gpio.h
@@ -72,7 +72,7 @@
 
 #ifndef __ASSEMBLY__
 
-#ifdef CONFIG_ADI_GPIO1
+#ifndef CONFIG_ADI_GPIO2
 void set_gpio_dir(unsigned, unsigned short);
 void set_gpio_inen(unsigned, unsigned short);
 void set_gpio_polar(unsigned, unsigned short);