storaged: lower capabilities in init

Lower storaged's capabilities to DAC_READ_SEARCH as an initial step
toward running it non-root.

Bug: 77634061
Test: storaged still runs and its /proc/pid/status has lower CapPrms
Change-Id: Ibfe0349fc059e2f37efba33f587176e8ce6be9fe
diff --git a/storaged/storaged.rc b/storaged/storaged.rc
index a24c7fb..ed2cf14 100644
--- a/storaged/storaged.rc
+++ b/storaged/storaged.rc
@@ -1,5 +1,6 @@
 service storaged /system/bin/storaged
     class main
+    capabilities DAC_READ_SEARCH
     priority 10
     file /d/mmc0/mmc0:0001/ext_csd r
     writepid /dev/cpuset/system-background/tasks