[kernel] add missing autoload shortcut to crypto modules for btrfs

[kernel] add missing autoload shortcut to crypto modules for btrfs

Currently the btrfs module (and other fs modules) is loaded before other modules to provide early extroot compatibility. This will fail for btrfs however, because the dependencies crypto-core and crypto-hash are missing. This patch makes them available for early loading too.

Signed-off-by: Jan Willies <jan@willies.info>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30542 3c298f89-4303-0410-b956-a3cf2f4a3e73