verilog: connect player 2 keys to player 2

Reconnect the Player 2 keys to Player 2; they were accidentally connected
to Player 1 in sehugg@271c2ea

Fixes sehugg#31

src/platform/verilog.ts

@@ -47,12 +47,12 @@ var VERILOG_KEYCODE_MAP = makeKeycodeMap([
   [Keys.DOWN,  0, 0x8],
   [Keys.A,     0, 0x10],
   [Keys.B,     0, 0x20],
-  [Keys.P2_LEFT,  0, 0x1],
-  [Keys.P2_RIGHT, 0, 0x2],
-  [Keys.P2_UP,    0, 0x4],
-  [Keys.P2_DOWN,  0, 0x8],
-  [Keys.P2_A,     0, 0x10],
-  [Keys.P2_B,     0, 0x20],
+  [Keys.P2_LEFT,  1, 0x1],
+  [Keys.P2_RIGHT, 1, 0x2],
+  [Keys.P2_UP,    1, 0x4],
+  [Keys.P2_DOWN,  1, 0x8],
+  [Keys.P2_A,     1, 0x10],
+  [Keys.P2_B,     1, 0x20],
   [Keys.START,     2, 0x1],
   [Keys.P2_START,  2, 0x2],
   [Keys.SELECT,    2, 0x4],