[meta-xilinx] [RFC][Question] Enable VFP?

[Bian, Naimeng]

Hi all,

As I know, VFP is an optional unit for ARMv7, but do all of Zynq Soc support VFP, 
if so, IMO we should set DEFAULTTUNE to 'cortexa9thf-neon' in conf/machine/include/tune-zynq.

Thanks
 Bian