polarssl: disable assembly for more scenarios

Disable assembly optimizations for:
Microblaze in general (previously a patch).
ARM with debugging in Thumb1/2 mode. This one fixes:
http://autobuild.buildroot.net/results/31e/31e8c4e29d51039cd5d213c2fe176a9cc39879da/



Do so in a nicer way with a one-liner sed and drop the patch.

And rename patches around, numbering was off.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>