inputflinger/reader: format Android.bp file

This fixes a Bpfmt lint error reported on change
Id92581014836ba856b29741117e9f6a397d9422c (but not actually caused by
the changes in that CL), by running the following command:

    $ prebuilts/build-tools/linux-x86/bin/bpfmt -s -w \
        frameworks/native/services/inputflinger/reader/Android.bp

Test: none
Bug: b/245989146
Flag: EXEMPT refactor
Change-Id: I70d78ddfe21ecc2cb853d3a48d6707e25505332b