[automerger skipped] Merge "soong config: add value_variable substitution" into rvc-dev am: a59774eb -s ours
am skip reason: Change-Id I18f35746b5cc39c304a136980249e886d38c6df6 with SHA-1 b0935db8 is in history
Change-Id: I2742f3949baf137f5833fa0012fd6fc821b7a737