Fix indentation of grammar.
Fix indentation of grammar.

Replace tabs with two spaces.

svstuff/systemverilog,spookysys/systemverilog,spookysys/systemverilog,svstuff/systemverilog,vaisup/systemverilog-1,svstuff/systemverilog,vaisup/systemverilog-1,svstuff/systemverilog,svstuff/systemverilog,svstuff/systemverilog,vaisup/systemverilog-1,svstuff/systemverilog,spookysys/systemverilog,spookysys/systemverilog,spookysys/systemverilog,vaisup/systemverilog-1,spookysys/systemverilog,vaisup/systemverilog-1,vaisup/systemverilog-1,spookysys/systemverilog,vaisup/systemverilog-1