Revert "xfrm: Fix RCU vs hash_resize_mutex lock inversion"

This reverts commit f08b2d07 which is
commit 2580d3f4 upstream.

It breaks the abi and should not be needed for Android systems.

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I13a6e3459cc2c7fb31b4cbc1185a9b463fc61c6e