sercomm: Move HDLC related defines into C file
Those values are not relevant to the sercomm user, only to the
implementation and thus can remain inside sercomm.c
Change-Id: I5700a45985b7c119c6338932171aae62ee4e2d22
diff --git a/src/sercomm.c b/src/sercomm.c
index dbe3d05..75e7968 100644
--- a/src/sercomm.c
+++ b/src/sercomm.c
@@ -58,6 +58,13 @@
#endif
+#define HDLC_FLAG 0x7E
+#define HDLC_ESCAPE 0x7D
+
+#define HDLC_C_UI 0x03
+#define HDLC_C_P_BIT (1 << 4)
+#define HDLC_C_F_BIT (1 << 4)
+
enum rx_state {
RX_ST_WAIT_START,
RX_ST_ADDR,