netdevsim: make array res_ids static const, makes object smaller

Don't populate the array res_ids on the stack but instead it
static const. Makes the object code smaller by 14 bytes.

Before:
text data bss dec hex filename
50833 8314 256 59403 e80b ./drivers/net/netdevsim/fib.o

After:
text data bss dec hex filename
50755 8378 256 59389 e7fd ./drivers/net/netdevsim/fib.o

(gcc version 10.2.0)

Signed-off-by: Colin Ian King <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/netdevsim/fib.c

···
 static void nsim_fib_set_max_all(struct nsim_fib_data *data,
 				 struct devlink *devlink)
 {
-	enum nsim_resource_id res_ids[] = {
+	static const enum nsim_resource_id res_ids[] = {
 		NSIM_RESOURCE_IPV4_FIB, NSIM_RESOURCE_IPV4_FIB_RULES,
 		NSIM_RESOURCE_IPV6_FIB, NSIM_RESOURCE_IPV6_FIB_RULES,
 		NSIM_RESOURCE_NEXTHOPS,