audio: Add more legacy channel masks for the input direction

This is in order to achieve a better parity both with
legacy output channel masks and AIDL channel layouts.
The change only affects the XSD schema used to generate
a parser for legacy configuration files.

Bug: 283542128
Test: atest audio_aidl_conversion_tests
(cherry picked from https://android-review.googlesource.com/q/commit:310b1c6e7e277577b991414c016dcf645e47ea1d)
Merged-In: Ic69b94f6ec650e0814f0200dbef219567eac9fe2
Change-Id: Ic69b94f6ec650e0814f0200dbef219567eac9fe2