scripts/kconfig/nconf: add KEY_HOME / KEY_END for dialog_inputbox

to make it easier to locate begin/end when editing long strings;

Signed-off-by: Cheng Renquan <crquan@gmail.com>
Acked By: Nir Tzachar <nir.tzachar@gmail.com>
diff --git a/scripts/kconfig/nconf.gui.c b/scripts/kconfig/nconf.gui.c
index 4b9d8b6..3b18dd8 100644
--- a/scripts/kconfig/nconf.gui.c
+++ b/scripts/kconfig/nconf.gui.c
@@ -465,6 +465,14 @@
 				cursor_form_win--;
 			}
 			break;
+		case KEY_HOME:
+			cursor_position = 0;
+			cursor_form_win = 0;
+			break;
+		case KEY_END:
+			cursor_position = len;
+			cursor_form_win = min(cursor_position, prompt_width-1);
+			break;
 		default:
 			if ((isgraph(res) || isspace(res))) {
 				/* one for new char, one for '\0' */