ppc4xx: Move gpio.h to ppc4xx-gpio.h since its ppc4xx specific

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/gdsys/dlvision/dlvision.c b/board/gdsys/dlvision/dlvision.c
index ff5f183..3499bdc 100644
--- a/board/gdsys/dlvision/dlvision.c
+++ b/board/gdsys/dlvision/dlvision.c
@@ -25,7 +25,7 @@
 #include <command.h>
 #include <asm/processor.h>
 #include <asm/io.h>
-#include <asm/gpio.h>
+#include <asm/ppc4xx-gpio.h>
 
 enum {
 	HWTYPE_DLVISION_CPU = 0,
diff --git a/board/gdsys/intip/intip.c b/board/gdsys/intip/intip.c
index 8d83198..aa85ea4 100644
--- a/board/gdsys/intip/intip.c
+++ b/board/gdsys/intip/intip.c
@@ -31,7 +31,7 @@
 #include <asm/io.h>
 #include <asm/mmu.h>
 #include <asm/4xx_pcie.h>
-#include <asm/gpio.h>
+#include <asm/ppc4xx-gpio.h>
 
 extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];