MAINTAINERS: migrate dts/arc/ from CODEOWNERS

* migrate dts/arc/ from CODEOWNERS to MAINTAINERS
* drop iriszzw as not working in Synopsys anymore

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>

CODEOWNERS

@@ -395,7 +395,6 @@
 /drivers/wifi/eswifi/                     @loicpoulain @nandojve
 /drivers/wifi/winc1500/                   @kludentwo
 /drivers/virtualization/		  @tbursztyka
-/dts/arc/                                 @abrodkin @ruuddw @iriszzw @evgeniy-paltsev
 /dts/arm/acsip/                           @NorthernDean
 /dts/arm/aspeed/                          @aspeeddylan
 /dts/arm/atmel/                           @galak @nandojve

MAINTAINERS.yml

@@ -136,7 +136,7 @@ ARC arch:
     - arch/arc/
     - include/zephyr/arch/arc/
     - tests/arch/arc/
-    - dts/arc/synopsys/
+    - dts/arc/
     - dts/bindings/arc/
     - doc/hardware/arch/arc-support-status.rst
   labels: