IMX: MX31: Cleanup include files and drop nasty #ifdef in drivers

As exception among the i.MX processors, the i.MX31 has headers
without general names (mx31-regs.h, mx31.h instead of imx-regs.h and
clock.h). This requires several nasty #ifdef in the drivers to
include the correct header. The patch cleans up the driver and
renames the header files as for the other i.MX processors.

Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/board/davedenx/qong/fpga.c b/board/davedenx/qong/fpga.c
index 656d5cd..789acf0 100644
--- a/board/davedenx/qong/fpga.c
+++ b/board/davedenx/qong/fpga.c
@@ -23,8 +23,8 @@
  */
 
 #include <common.h>
-#include <asm/arch/mx31.h>
-#include <asm/arch/mx31-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
 #include <mxc_gpio.h>
 #include <fpga.h>
 #include <lattice.h>
diff --git a/board/davedenx/qong/lowlevel_init.S b/board/davedenx/qong/lowlevel_init.S
index 80bed92..85fbfc3 100644
--- a/board/davedenx/qong/lowlevel_init.S
+++ b/board/davedenx/qong/lowlevel_init.S
@@ -20,7 +20,7 @@
  * MA 02111-1307 USA
  */
 
-#include <asm/arch/mx31-regs.h>
+#include <asm/arch/imx-regs.h>
 
 .macro REG reg, val
 	ldr r2, =\reg
diff --git a/board/davedenx/qong/qong.c b/board/davedenx/qong/qong.c
index 3ace6cd..b1238d5 100644
--- a/board/davedenx/qong/qong.c
+++ b/board/davedenx/qong/qong.c
@@ -23,8 +23,8 @@
 
 #include <common.h>
 #include <netdev.h>
-#include <asm/arch/mx31.h>
-#include <asm/arch/mx31-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
 #include <asm/io.h>
 #include <nand.h>
 #include <fsl_pmic.h>