edac: initialize the core earlier

In order for it to work with it builtin, the EDAC core should
be initialized earlier, otherwise the ghes_edac driver initializes
before edac_mc_sysfs_init() being called:

...
[ 4.998373] EDAC MC0: Giving out device to 'ghes_edac.c' 'ghes_edac': DEV ghes
...
[ 4.998373] EDAC MC1: Giving out device to 'ghes_edac.c' 'ghes_edac': DEV ghes
[ 6.519495] EDAC MC: Ver: 3.0.0
[ 6.523749] EDAC DEBUG: edac_mc_sysfs_init: device mc created

The net result is that no EDAC sysfs nodes will appear.

Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/edac/edac_module.c

···
 /*
  * Inform the kernel of our entry and exit points
  */
-module_init(edac_init);
+subsys_initcall(edac_init);
 module_exit(edac_exit);
 
 MODULE_LICENSE("GPL");