add etnaviv (armv7/aarch64) dependency pycparser
src/etnaviv/hwdb/meson.build:17:2: ERROR: Problem encountered: Python (3.x) pycparser module >= 2.20 required to build mesa.
Future TODO: replace local python3-ply.bst
with freedesktop-sdk components/python3-ply.bst
(available in master, but NOT in todays freedesktop-sdk-23.08.17)