These two commits add preliminary support for Energy Micro (now Silicon Labs)

Giant Gecko SoCs. They have a Cortex-M3 core, and so are Thumb2 only and don't
feature an MMU. With these changes merged there is no additional code needed
under arch/arm to run Linux on such a SoC.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)

iQIcBAABCAAGBQJSrzE+AAoJEOLc3ZEyZpvWOq4P/1lzqAtsDXCxXZtWikq/5ReQ
ngh1PE+2tvFWFe9zlt81nX3DvXDmW7bxpXgHie77afWH76mBxMWQEZbTPiHkqsoy
3Jx5M47yAYshyMMypN/Klra/4lD09FhRIDnD4o0lkXHytNp5ULa7gUMzcMjzlzvM
up732riF6+/aB9JaLiBrAptsGhnng4XSZEHruBpHdNJB+YDfNbmSQOQ5H42QBSpg
aUiGrXhIPZUHnyrBx7ttGztsoQ2QON8s+4xmMZPyhlbHhrIy5OsbKe6jr790HFID
1TJHVpY0E00vhee8l5A1QUAul4k8W8s93gM6Sitvo8/uBC0PP+HWTLXBHxbdrTYX
r0LtRuKXmdW0BaRtOpW4xoUKyAT9cjF/tPqZks4moa2zXYUQR1fpofBLoaxgG97h
IkrXx02jQjkOJzTmoprbRlf4U/WSQqbtF568x7SsGY0why+m4CFqO16Ae5SxhXO9
rO/HTTdCB4LQ6vffHCIAbHWH7A88mP4uDQHgklGd5aDhN91KADJSoyEVPcpczw2N
3RuqqCYQUM1KWR9OTwN5Hbpu+Gy7q10RJHvsIHVrdtJA+zkE+5H4LLOA/OBO1GCj
3XcAgF/fkvwp8QEqDvh0qEy61ACQAFnhHMH+52h8adTXHkZSMSPglhl+fDBLe5wn
NtLFx/F1fxVUJo5ASQqL
=EKdU
-----END PGP SIGNATURE-----