m68k/atari: Prefix GPIO_{IN,OUT} with CODEC_

These defines are way to generic, and cause conflicts:

drivers/net/wireless/rtlwifi/rtl8192c/../rtl8192ce/reg.h:369:1: warning: "GPIO_IN" redefined
drivers/net/wireless/rtlwifi/rtl8192c/../rtl8192ce/reg.h:370:1: warning: "GPIO_OUT" redefined
drivers/net/wireless/rtlwifi/rtl8192se/reg.h:252:1: warning: "GPIO_IN" redefined
drivers/net/wireless/rtlwifi/rtl8192se/reg.h:253:1: warning: "GPIO_OUT" redefined
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>

arch/m68k/include/asm/atarihw.h

@@ -399,8 +399,8 @@ struct CODEC
 #define CODEC_OVERFLOW_LEFT     2
   u_char unused2, unused3, unused4, unused5;
   u_char gpio_directions;
-#define GPIO_IN                 0
-#define GPIO_OUT                1
+#define CODEC_GPIO_IN           0
+#define CODEC_GPIO_OUT          1
   u_char unused6;
   u_char gpio_data;
 };