soc/src: Add script to sparse-checkout the bsg_dmc files

soc/src/setup_basejump.sh

@@ -0,0 +1,12 @@
+#! /bin/bash
+
+git submodule update --init
+cd basejump_stl
+
+rm -rf imports
+git sparse-checkout set bsg_async bsg_clk_gen bsg_dataflow bsg_dmc bsg_mem bsg_misc bsg_noc bsg_tag testing/bsg_dmc/lpddr_verilog_model
+rm -f */*_nonsynth_*
+
+# Fix errors in basejump code
+printf '69m63\nw\n' | ed bsg_mem/bsg_mem_1rw_sync_mask_write_bit_from_1r1w.sv
+sed -i '17i \`include "bsg_defines.sv"' bsg_dmc/bsg_dmc_dly_line_v3.sv