pandaboard: fix compiler arguments for default toolchain

The 4.4 compiler under prebuilts does not support the
-march and -mcpu being used together. This changes updates
the test to determine if those flags can be used.

Change-Id: Ib4700b9f6418eee80d9d3b7030a2efb1aedc7910
Signed-off-by: Andy Doan <andy.doan@linaro.org>
1 file changed