[qca-nss-clients] Remove rcu_read_lock

Code invokes msleep() after acquring rcu_read_lock. This causes
a WARN in 5.4 kernel.

ipv4_neigh_lookup() calls __ipv4_neigh_lookup() and neigh_create().
__ipv4_neigh_lookup() does acquires rcu_read_lock() while traversing
rcu list. __neigh_create() uses write_lock_bh()/write_unlock_bh()
to modify list.

Signed-off-by: Ratheesh Kannoth <rkannoth@codeaurora.org>
Change-Id: I6fa808b1c239fe15d5bb91a304e43e22d4a46273
1 file changed