misc: Allow dynamic length for synchronizer

trashernet/synchronizer.vhd

@@ -3,6 +3,9 @@ use ieee.std_logic_1164.all;
 use ieee.numeric_std.all;
 
 entity synchronizer is
+	generic(
+		SIZE : integer := 3
+	);
 	port(
 		clk      : in  std_logic;
 		rst      : in  std_logic;
@@ -12,7 +15,7 @@ entity synchronizer is
 end entity synchronizer;
 
 architecture RTL of synchronizer is
-	signal sr : std_logic_vector(2 downto 0);
+	signal sr : std_logic_vector(SIZE - 1 downto 0);
 begin
 	sync : process(clk, rst) is
 	begin