The Qualcomm AMP PAL needs room to add 802.11 headers to outgoing frames, but the extra memory overhead is not necessary in other cases. CRs-fixed: 288438 Change-Id: Ie546bf702d56e80918c54019b4b0bb4c8bb40e0b Signed-off-by: Mat Martineau <mathewm@codeaurora.org>