[automerge] Use sp<T>::make to create the sp pointer for EventLoopCallback 2p: a9de1657e9

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/connectivity/wificond/+/20330536

Bug: 243362981
Change-Id: I9531005683840049538a0f24d44e029adc313434
Merged-In: Ia9505a2247bd129665ed3b1ca87f701f7e4c48f6