6.3.0 is a bugfix release in gcc 6 series
(From OE-Core rev: 36ffcd1d7d2ab9dcc91e9c09623a6613a248bc69)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>