Generate parser file in out/ instead of root of source tree

Android source tree will eventually be made ReadOnly with /tmp and /out
as ReadWrite directories.
Bison would previously generate the parser file in
$(TOP)/ir3_parser.tab.c
With this CL, Bison will generate the parser file in
out/target/product/.../ir3_parser.h.tab.c.

Bug: 174726238
Test: Tested it for db845c, which uses external/mesa3d
Change-Id: I8278b8adc338ec8e1c339566836d83cc04e60d44
1 file changed