[binutils-gdb] Add or1k target to --enable-targets=all

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT fdbe37e35fed48091296434652101a63fa4360cf ***

Author: Simon Marchi <simon.marchi@ericsson.com>
Branch: master
Commit: fdbe37e35fed48091296434652101a63fa4360cf

Add or1k target to --enable-targets=all

The or1k-tdep.o object is missing from the ALL_TARGET_OBS, which means
it's not currently included in an --enable-targets=all build.

gdb/ChangeLog:

	* Makefile.in (ALL_TARGET_OBS): Add or1k-tdep.o.