staging: gasket: print mmap starting address as unsigned long

Page alignment error log should print the offending value as an unsigned
long, not as a kernel pointer.
Reported-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gasket/gasket_core.c

@@ -1596,8 +1596,8 @@ static int gasket_mmap(struct file *filp, struct vm_area_struct *vma)
 
 	if (vma->vm_start & ~PAGE_MASK) {
 		gasket_log_error(
-			gasket_dev, "Base address not page-aligned: 0x%p\n",
-			(void *)vma->vm_start);
+			gasket_dev, "Base address not page-aligned: 0x%lx\n",
+			vma->vm_start);
 		trace_gasket_mmap_exit(-EINVAL);
 		return -EINVAL;
 	}