manifest: Update sdk-nrf-802154 and nrfxlib revisions

This commit updates sdk-nrf-802154 and nrfxlib revisions to bring in
the latest changes in the nrf_802154 component.

Signed-off-by: Jędrzej Ciupis <jedrzej.ciupis@nordicsemi.no>

west.yml

@@ -140,7 +140,7 @@ manifest:
     - name: nrfxlib
       repo-path: sdk-nrfxlib
       path: nrfxlib
-      revision: 2a163be8ebdcb38e1ea4ce082afc04954e03f844
+      revision: ef2b4998af6278f10305a7e0eea9890fd244c3a0
     - name: trusted-firmware-m
       repo-path: sdk-trusted-firmware-m
       path: modules/tee/tf-m/trusted-firmware-m
@@ -166,7 +166,7 @@ manifest:
     - name: nrf-802154
       repo-path: sdk-nrf-802154
       path: nrf-802154
-      revision: e6954e9b91900e9913e6418cf55948916126f398
+      revision: ef53e051cd04d62b330596f8982f4763f18e4148
       groups:
         - nrf-802154
     - name: dragoon