[console] Update genkeymap to work with current databases

Rewrite genkeymap.pl in Python with added sanity checks, and update
the list of keyboard mappings to remove those no longer supported by
the underlying "loadkeys" tool.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/hci/keymap/keymap_pt.c

@@ -12,18 +12,21 @@ FILE_LICENCE ( PUBLIC_DOMAIN );
 
 /** "pt" keyboard mapping */
 struct key_mapping pt_mapping[] __keymap = {
-	{ 0x1c, 0x1d },	/* 0x1c => 0x1d */
-	{ 0x1d, 0x1b },	/* 0x1d => 0x1b */
-	{ 0x22, 0x5e },	/* '"' => '^' */
-	{ 0x27, 0x7e },	/* '\'' => '~' */
-	{ 0x2f, 0x3b },	/* '/' => ';' */
-	{ 0x3f, 0x3a },	/* '?' => ':' */
-	{ 0x5b, 0x27 },	/* '[' => '\'' */
-	{ 0x5c, 0x5d },	/* '\\' => ']' */
-	{ 0x5d, 0x5b },	/* ']' => '[' */
-	{ 0x60, 0x27 },	/* '`' => '\'' */
-	{ 0x7b, 0x60 },	/* '{' => '`' */
-	{ 0x7c, 0x7d },	/* '|' => '}' */
-	{ 0x7d, 0x7b },	/* '}' => '{' */
-	{ 0x7e, 0x22 },	/* '~' => '"' */
+	{ 0x1e, 0x36 },	/* 0x1e => '6' */
+	{ 0x26, 0x2f },	/* '&' => '/' */
+	{ 0x28, 0x29 },	/* '(' => ')' */
+	{ 0x29, 0x3d },	/* ')' => '=' */
+	{ 0x2a, 0x28 },	/* '*' => '(' */
+	{ 0x2d, 0x27 },	/* '-' => '\'' */
+	{ 0x2f, 0x2d },	/* '/' => '-' */
+	{ 0x3c, 0x3b },	/* '<' => ';' */
+	{ 0x3e, 0x3a },	/* '>' => ':' */
+	{ 0x3f, 0x5f },	/* '?' => '_' */
+	{ 0x40, 0x22 },	/* '@' => '"' */
+	{ 0x5b, 0x2b },	/* '[' => '+' */
+	{ 0x5e, 0x26 },	/* '^' => '&' */
+	{ 0x5f, 0x3f },	/* '_' => '?' */
+	{ 0x60, 0x5c },	/* '`' => '\\' */
+	{ 0x7b, 0x2a },	/* '{' => '*' */
+	{ 0x7e, 0x7c },	/* '~' => '|' */
 };