Revert "cli_readline: Only insert printable chars"

This reverts commit d2e64d29c4.

This commit broke support for pound sign (£) and euro sign (€) keys on
Nokia N900 keypad.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

common/cli_readline.c

@@ -517,10 +517,8 @@ static int cread_line(const char *const prompt, char *buf, unsigned int *len,
 		}
 #endif
 		default:
-			if (ichar >= ' ' && ichar <= '~') {
-				cread_add_char(ichar, insert, &num, &eol_num,
-					       buf, *len);
-			}
+			cread_add_char(ichar, insert, &num, &eol_num, buf,
+				       *len);
 			break;
 		}
 	}