zephyr: drop various empty named-pwms nodes

Drop few empty named-pwms nodes from top level dts files. Having those
laying around generates compiler warning if the board is built with
CONFIG_LTO=n.

BRANCH=none
BUG=b:217741090
TEST=cq dry run

Signed-off-by: Fabio Baltieri <[email protected]>
Change-Id: Ib18620668716e5ad9a25526585a063e356b02f20
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3542405
Reviewed-by: Jack Rosenthal <[email protected]>

Author: fabiobaltieri

zephyr/boards/arm/brya/brya.dts

@@ -87,10 +87,6 @@
 		};
 	};
 
-	named-pwms {
-		compatible = "named-pwms";
-	};
-
 	named-adc-channels {
 		compatible = "named-adc-channels";
 

zephyr/boards/arm/npcx7/npcx7.dts

@@ -34,10 +34,6 @@
 		compatible = "named-i2c-ports";
 	};
 
-	named-pwms {
-		compatible = "named-pwms";
-	};
-
 	named-adc-channels {
 		compatible = "named-adc-channels";
 	};

zephyr/boards/arm/npcx9/npcx9.dts

@@ -33,10 +33,6 @@
 		compatible = "named-i2c-ports";
 	};
 
-	named-pwms {
-		compatible = "named-pwms";
-	};
-
 	named-adc-channels {
 		compatible = "named-adc-channels";
 	};