Staging: kpc2000: kpc_dma: include <linux/io.h> instead of <asm/io.h>

Fix following checkpatch.pl warning by including
<linux/io.h> instead of <asm/io.h>.

WARNING: Use #include <linux/io.h> instead of <asm/io.h>
Signed-off-by: NPuranjay Mohan <puranjay12@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/kpc2000/kpc_dma/dma.c

@@ -2,7 +2,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/types.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>