Add driver init to mg_mgr_init()

src/drivers/ra.h

@@ -1,8 +1,41 @@
 #pragma once
 
+#if MG_ENABLE_TCPIP && defined(MG_ENABLE_DRIVER_RA) && MG_ENABLE_DRIVER_RA
+
 struct mg_tcpip_driver_ra_data {
   // MDC clock "divider". MDC clock is software generated,
   uint32_t clock;    // core clock frequency in Hz
   uint16_t irqno;    // IRQn, R_ICU->IELSR[irqno]
   uint8_t phy_addr;  // PHY address
 };
+
+#undef MG_ENABLE_TCPIP_DRIVER_INIT
+#define MG_ENABLE_TCPIP_DRIVER_INIT 0  // TODO(): needs SystemCoreClock
+#if 0
+#ifndef MG_MAC_ADDRESS
+#define MG_MAC_ADDRESS MG_MAC_ADDRESS_RANDOM
+#endif
+
+#ifndef MG_TCPIP_PHY_ADDR
+#define MG_TCPIP_PHY_ADDR 1
+#endif
+
+#ifndef MG_DRIVER_RA_CLOCK
+#define MG_DRIVER_RA_CLOCK
+#endif
+
+#ifndef MG_DRIVER_RA_IRQNO
+#define MG_DRIVER_RA_IRQNO 0
+#endif
+
+#define MG_TCPIP_DRIVER_DATA                                \
+  static struct mg_tcpip_driver_ra_data driver_data = { \
+      .clock = MG_DRIVER_RA_CLOCK,                            \
+      .irqno = MG_DRIVER_RA_CLOCK,                            \
+      .phy_addr = MG_TCPIP_PHY_ADDR,                        \
+  };
+
+#define MG_TCPIP_DRIVER_CODE &mg_tcpip_driver_ra
+#define MG_TCPIP_DRIVER_NAME "ra"
+#endif
+#endif