kernel: fix loading kernel add-ons on arm

Change-Id: I60cc1c1aa9d4298453aece0456ce7ee74fc95a34
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4659
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: X512 <danger_mail@list.ru>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

src/system/kernel/elf.cpp

@@ -2286,6 +2286,8 @@ load_kernel_add_on(const char *path)
 			case PT_EH_FRAME:
 				// not implemented yet, but can be ignored
 				continue;
+			case PT_ARM_UNWIND:
+				continue;
 			default:
 				dprintf("%s: unhandled pheader type %#" B_PRIx32 "\n", fileName,
 					programHeaders[i].p_type);