ARM: mmp: include the correct cputype.h

The file was moved, causing a build error:

In file included from /git/arm-soc/arch/arm/mach-mmp/pxa168.c:28:
arch/arm/mach-mmp/pxa168.h:22:10: fatal error: cputype.h: No such file or directory

Include it from the new location.

Link: https://lore.kernel.org/r/20191210203409.2875880-1-arnd@arndb.de
Fixes: 32adcaa0 ("ARM: mmp: move cputype.h to include/linux/soc/")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-mmp/pxa168.h

@@ -17,9 +17,9 @@ extern void pxa168_clear_keypad_wakeup(void);
 #include <linux/platform_data/keypad-pxa27x.h>
 #include <linux/pxa168_eth.h>
 #include <linux/platform_data/mv_usb.h>
+#include <linux/soc/mmp/cputype.h>
 
 #include "devices.h"
-#include "cputype.h"
 
 extern struct pxa_device_desc pxa168_device_uart1;
 extern struct pxa_device_desc pxa168_device_uart2;