ruby: Use arm32 for coroutines on 32bit-arm
in 2.7 [2] ruby enabled ucontext for coroutines on arm32 but it does not
work for musl since it uses glibc specific functions e.g.
getcontext/swapcontext/swapcontext also see [1]
This patch reverts back to using arm32 implementation for coroutines on
arm
[1] https://bugs.ruby-lang.org/issues/16455#change-83442
[2] https://github.com/ruby/ruby/commit/
6c6bf9ffcbfeb8be9d9c342e7604b74ec819e88a#diff-7fccec8474e2184cd2518046bf39d54cL10
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
