Duplicate parameters in the tune args are repeated in the
MULTILIB_OPTIONS variable. This leads to incorrect configurations
if the order of the parameters is bad.
(Eg. "mhard-float m32/mhard-float m64" leads to an incorrect config)
This patch finds the common parameters and removes the duplicates.
Signed-off-by: Alexandru-Cezar Sardan <alexandru.sardan@freescale.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
