stating/atomisp: fix -Wold-style-definition warning

ia_css_dequeue_param_buffers does not have an arguement type, causing a warning:

drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_params.c: In function 'ia_css_dequeue_param_buffers':
drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_params.c:3728:6: error: old-style function definition [-Werror=old-style-definition]

This adds a 'void' keywork to silence the warning.

Fixes: a49d2536 ("staging/atomisp: Add support for the Intel IPU v2")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_params.c

@@ -3723,7 +3723,7 @@ static void sh_css_update_isp_mem_params_to_ddr(
 	IA_CSS_LEAVE_PRIVATE("void");
 }
 
-void ia_css_dequeue_param_buffers(/*unsigned int pipe_num*/)
+void ia_css_dequeue_param_buffers(/*unsigned int pipe_num*/ void)
 {
 	unsigned int i;
 	hrt_vaddress cpy;