xilinx-zynq: Tune for cortexa9-vfpv3
xilinx-zynq: Tune for cortexa9-vfpv3

This change will make the OE-built components match the tuning settings
used in other NI software.

Specifically, the FPU will change from (implicit) neon to vfpv3 which should
improve floating point performance.  The cpu will also change from generic
armv7a to cortexa9 which may provide further performance benefits.

Signed-off-by: Ken Sharp <e6c8ad8f54d15df4645e8aaf3f7a209bc3688570@ni.com>
Acked-by: Ben Shelton <873d2944fc7a954ed322314738197137e10de387@ni.com>
Acked-by: Rich Tollerton <67c688e7f7482ba5c4ebe3d70bc77594748182a6@ni.com>
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Natinst-ReviewBoard-ID: 86946

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt