Add ARM vfpv4 tuning option support

:Release Notes:
Backport vfpv4 hardware tuning option from upstream oe-core. It was added
as part of the support for Cortex A7 tuning (NEONv2 and FPv4).

:Detailed Notes:
This is a backport of the patch:
   commit e97d152ca13556b41a236c1a4cfb11e77ff857d7
   Author: Kristof Robot <krirobo@gmail.com>
   Date:   Sun Jan 26 10:03:56 2014 +0100

      Add Cortex A7 support for NEONv2 & FPv4

:Testing Performed:

:QA Notes:

:Issues Addressed:
[BHV-3827] Create skeleton for new BSP layer
[BHV-4683] CCC: Create skeleton for new BSP layer

Open-webOS-DCO-1.0-Signed-off-by: Iyad Qumei <iyad.qumei@lge.com>

Change-Id: I9c9d791150ca7ce06bca34ee1f6f6440a62b4e37
Reviewed-on: https://g2g.palm.com/5377
Build: Iyad Qumei <iyad.qumei@lge.com>
Reviewed-by: Iyad Qumei <iyad.qumei@lge.com>
Tested-by: Iyad Qumei <iyad.qumei@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>