drivers: adc: siwx91x: update west.yml

update west.yml to point to ADC sdk changes in hal_silabs

Signed-off-by: Sai Santhosh Malae <[email protected]>

Author: smalae

west.yml

@@ -230,7 +230,7 @@ manifest:
       groups:
         - hal
     - name: hal_silabs
-      revision: 389726f350880238b9a1034f575ffd46c4309827
+      revision: pull/104/head
       path: modules/hal/silabs
       groups:
         - hal