arch-armv7ve: inherit armv7a tunes file
armv7a is a subset of armv7ve:
https://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html
-march=armv7ve is the armv7-a architecture with virtualization extensions.
By inheriting armv7a from armv7ve it's possible for e.g. Cortex-A15 machines
to include tune-cortexa15.inc and have a full range of optimizations, but
set DEFAULTTUNE as "armv7a" to produce binaries compatible with Cortex-A8
machines, etc.
(From OE-Core rev:
5bf5e68e540dc4e034288702094d306ebd19fef9)
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster@mvista.com>
