drm/amdkfd: add missing void argument to function kgd2kfd_init

From: Colin Ian King <colin.king@canonical.com>

commit 63617d8b125ed9f674133dd000b6df58d6b2965a upstream.

Function kgd2kfd_init is missing a void argument, add it
to clean up the non-ANSI function declaration.

Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/gpu/drm/amd/amdkfd/kfd_module.c

@@ -82,7 +82,7 @@ static void kfd_exit(void)
 	kfd_chardev_exit();
 }
 
-int kgd2kfd_init()
+int kgd2kfd_init(void)
 {
 	return kfd_init();
 }