Remove trailing whitespaces

docs/source/code_examples/fifo/Makefile

@@ -2,7 +2,7 @@ include ../../../common.mk
 
 DOT_NAMES = addr_gen_hier addr_gen_proc addr_gen_clean
 DOT_NAMES += rdata_proc rdata_flat rdata_adffe rdata_memrdv2 rdata_alumacc rdata_coarse
-MAPDOT_NAMES = rdata_map_ram rdata_map_ffram rdata_map_gates 
+MAPDOT_NAMES = rdata_map_ram rdata_map_ffram rdata_map_gates
 MAPDOT_NAMES += rdata_map_ffs rdata_map_luts rdata_map_cells
 
 DOTS := $(addsuffix .dot,$(DOT_NAMES))

docs/source/code_examples/fifo/fifo.v

@@ -1,5 +1,5 @@
 // address generator/counter
-module addr_gen 
+module addr_gen
 #(  parameter MAX_DATA=256,
 	localparam AWIDTH = $clog2(MAX_DATA)
 ) ( input en, clk, rst,
@@ -21,7 +21,7 @@ module addr_gen
 endmodule //addr_gen
 
 // Define our top level fifo entity
-module fifo 
+module fifo
 #(  parameter MAX_DATA=256,
 	localparam AWIDTH = $clog2(MAX_DATA)
 ) ( input wen, ren, clk, rst,

docs/source/code_examples/fifo/fifo.ys

@@ -2,7 +2,7 @@
 # throw in some extra text to match what we expect if we were opening an
 # interactive terminal
 log $ yosys fifo.v
-log 
+log
 log -- Parsing `fifo.v' using frontend ` -vlog2k' --
 read_verilog -defer fifo.v