[meta-freescale] Update machine list for Test Form and Release Notes 1.6

[Daiane.Angolini at freescale.com]

Hi Otavio,

Could you, please, share the updated list of machine we support currently?
(or share the link for the script you use)

I´m starting to create the Test Form for 1.6 release and I must to get this list included.

Thanks in advance,
Daiane