msm: ipa: do not use skb clones for lan clients

IPA driver uses 8k buffers for RX packets as those are aggregated.
If these packets deaggregated in IPA driver, cloned and provided
to clients, later calls to skb_copy() results in creating an 8k skb
which may lead to high memory utilization.
This change avoid the use of skb clones and allocates new skbs
for LAN clients and copy the packet content to it.

CRs-Fixed: 1050670
Change-Id: Iba47db8936b49309360791c1c6b482dcfcffd4d7
Acked by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>