tcl: Add support for Kontron SMARC-sAL28

tcl: Add support for Kontron SMARC-sAL28

This commit is adapted from [1].

[1] https://review.openocd.org/c/openocd/+/4999

Signed-off-by: Michael Walle <michael.walle@kontron.com>
Signed-off-by: Heiko Thiery <heiko.thiery@kontron.com>
[ adapted to use common configuration ]
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Change-Id: I9a428371694e7864e03055b8de18a55a7843b8c2
Reviewed-on: https://review.openocd.org/c/openocd/+/6977
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>