dos: ARC: mark DSP AGU/XY extensions as supported on ARC EM

DSP AGU/XY extensions ARC EM processors are supported now in
Zephyr.

Signed-off-by: Eugeniy Paltsev <[email protected]>
Signed-off-by: Evgeniy Paltsev <[email protected]>

Author: evgeniy-paltsev

doc/hardware/arch/arc-support-status.rst

@@ -51,7 +51,7 @@ Legend:
 +---------------------------------------------------------------------+------------+-------------+--------+------------+------------+
 | DSP ISA                                                             | Y          | N [#f3]_    | TBD    | TBD        | TBD        |
 +---------------------------------------------------------------------+------------+-------------+--------+------------+------------+
-| DSP AGU/XY extensions                                               | WIP [#f3]_ | N [#f3]_    | TBD    | TBD        | TBD        |
+| DSP AGU/XY extensions                                               | Y          | N [#f3]_    | TBD    | TBD        | TBD        |
 +---------------------------------------------------------------------+------------+-------------+--------+------------+------------+
 | Userspace                                                           | Y          | Y           | N      | TBD        | TBD        |
 +---------------------------------------------------------------------+------------+-------------+--------+------------+------------+