Revert "Revert "driver core: Set fw_devlink to "permissive" behavior by default""

This reverts commit 18555cb6.

The reason[1] for the original revert has now been fixed by
commit 00b24755 ("driver core: Fix handling of
fw_devlink=permissive"). So, this patch reverts the revert. Marek has
also tested this patch with the fix mentioned above and confirmed that
the issue has been fixed.

[1] - https://lore.kernel.org/lkml/CAGETcx8nbz-J1gLvoEKE_HgCcVGyV2o8rZeq_USFKM6=s7WmNg@mail.gmail.com/T/#m12dfb5dfd23805b84c49f4bb2238a8cce436c2f7
[2] - https://lore.kernel.org/lkml/CAGETcx8nbz-J1gLvoEKE_HgCcVGyV2o8rZeq_USFKM6=s7WmNg@mail.gmail.com/T/#m2408a6ce098b2ebf583ca8534329695923ae57feTested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200428192006.109006-1-saravanak@google.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/core.c

@@ -2345,7 +2345,7 @@ static int device_private_init(struct device *dev)
 	return 0;
 }
 
-static u32 fw_devlink_flags;
+static u32 fw_devlink_flags = DL_FLAG_SYNC_STATE_ONLY;
 static int __init fw_devlink_setup(char *arg)
 {
 	if (!arg)