Merge "Use prebuilt dir variable for BISON_PKGDATADIR, instead of an absolute path."

# prebuilts/build-tools/common/bison.

# To run bison from elsewhere you need to set up enviromental variable

# BISON_PKGDATADIR.

BISON_PKGDATADIR := $(PWD)/prebuilts/build-tools/common/bison

BISON_PKGDATADIR := $(prebuilt_build_tools)/common/bison

BISON := $(prebuilt_build_tools_bin_noasan)/bison

YACC := $(BISON) -d

BISON_DATA := $(wildcard $(BISON_PKGDATADIR)/* $(BISON_PKGDATADIR)/*/*)