MIPS: Cobalt Don't use module_init in non-modular MTD registration.

As of commit 34b1252bd91851f77f89fbb6829a04efad900f41 ("MIPS:
Cobalt: Do not build MTD platform device registration code as module.")
this file became built-in instead of modular. So we should also
stop using module_init as an alias for __initcall as that can be
rather misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future. If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.

Direct use of __initcall is discouraged, vs prioritized ones.
Use of device_initcall is consistent with what __initcall
maps onto, and hence does not change the init order, making the
impact of this change zero.

Signed-off-by: Paul Gortmaker <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Patchwork: https://patchwork.linux-mips.org/patch/10549/
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/cobalt/mtd.c

···
 
 	return 0;
 }
-
-module_init(cobalt_mtd_init);
+device_initcall(cobalt_mtd_init);