pmgen: Move passes out of pmgen folder

- Techlib pmgens are now in relevant techlibs/*.
- `peepopt` pmgens are now in passes/opt.
- `test_pmgen` is still in passes/pmgen.
- Update `Makefile.inc` and `.gitignore` file(s) to match new `*_pm.h` location,
  as well as the `#include`s.
- Change default `%_pm.h` make target to `techlibs/%_pm.h` and move it to the
  top level Makefile.
- Update pmgen target to use `$(notdir $*)` (where `$*` is the part of the file
  name that matched the '%' in the target) instead of `$(subst _pm.h,,$(notdir
  $@))`.

techlibs/xilinx/Makefile.inc

@@ -46,3 +46,19 @@ $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/xc7_dsp_map.v))
 $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/xcu_dsp_map.v))
 
 $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc9_model.v))
+
+OBJS += techlibs/xilinx/xilinx_dsp.o
+GENFILES += techlibs/xilinx/xilinx_dsp_pm.h
+GENFILES += techlibs/xilinx/xilinx_dsp48a_pm.h
+GENFILES += techlibs/xilinx/xilinx_dsp_CREG_pm.h
+GENFILES += techlibs/xilinx/xilinx_dsp_cascade_pm.h
+techlibs/xilinx/xilinx_dsp.o: techlibs/xilinx/xilinx_dsp_pm.h techlibs/xilinx/xilinx_dsp48a_pm.h techlibs/xilinx/xilinx_dsp_CREG_pm.h techlibs/xilinx/xilinx_dsp_cascade_pm.h
+$(eval $(call add_extra_objs,techlibs/xilinx/xilinx_dsp_pm.h))
+$(eval $(call add_extra_objs,techlibs/xilinx/xilinx_dsp48a_pm.h))
+$(eval $(call add_extra_objs,techlibs/xilinx/xilinx_dsp_CREG_pm.h))
+$(eval $(call add_extra_objs,techlibs/xilinx/xilinx_dsp_cascade_pm.h))
+
+OBJS += techlibs/xilinx/xilinx_srl.o
+GENFILES += techlibs/xilinx/xilinx_srl_pm.h
+techlibs/xilinx/xilinx_srl.o: techlibs/xilinx/xilinx_srl_pm.h
+$(eval $(call add_extra_objs,techlibs/xilinx/xilinx_srl_pm.h))