video: Fix include in hp680_bl.

The hp6xx.h header moved location, causing the build to fail,
fix it up.
Signed-off-by: NKristoffer Ericson <kristoffer_e1@hotmail.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

drivers/video/backlight/hp680_bl.c

@@ -19,7 +19,7 @@
 #include <linux/backlight.h>
 
 #include <asm/cpu/dac.h>
-#include <asm/hp6xx/hp6xx.h>
+#include <asm/hp6xx.h>
 #include <asm/hd64461.h>
 
 #define HP680_MAX_INTENSITY 255