Staging: crystalhd: fix build on powerpc

Add necessary include to fix build on PowerPC
Signed-off-by: NDave Airlie <airlied@redhat.com>
Signed-off-by: NJarod Wilson <jarod@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/crystalhd/crystalhd_lnx.h

@@ -40,6 +40,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/pagemap.h>
+#include <linux/vmalloc.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>