got rid of several unnecessary UNSIGNED() type conversions

vhdl/rtl/vhdl/Video/VIDEO_CTRL.vhd

@@ -235,7 +235,7 @@ ARCHITECTURE BEHAVIOUR OF VIDEO_CTRL IS
 	SIGNAL clk_pixel_i              : STD_LOGIC;
 	SIGNAL mul1                     : UNSIGNED (16 DOWNTO 0);
 	SIGNAL mul2                     : UNSIGNED (16 DOWNTO 0);
-	SIGNAL mul3                     : UNSIGNED (16 DOWNTO 0);
+	SIGNAL mul3                     : UNSIGNED (16 DOWNTO 0) := (OTHERS => 'Z');
 BEGIN
 	vr_wr <= vr_wr_i;
 	video_reconfig <= video_reconfig_i;

vhdl/rtl/vhdl/io_register.vhd

@@ -26,7 +26,9 @@ END PACKAGE;
 LIBRARY IEEE;
     USE IEEE.std_logic_1164.ALL;
     USE IEEE.numeric_std.ALL;
-
+LIBRARY work;
+    USE work.io_register_pkg.ALL;
+    
 ENTITY io_register IS
 /*
     GENERIC