Introduce sysinit.c, better debug log, more verbose Makefile

mongoose.h

@@ -1492,7 +1492,10 @@ struct mip_if {
   uint64_t lease_expire;          // Lease expiration time
   uint8_t arp_cache[MIP_ARP_CS];  // Each entry is 12 bytes
   uint16_t eport;                 // Next ephemeral port
-  uint16_t dropped;               // Number of dropped frames
+  volatile uint32_t ndropped;     // Number of received, but dropped frames
+  volatile uint32_t nrecv;        // Number of received frames
+  volatile uint32_t nsent;        // Number of transmitted frames
+  volatile uint32_t nerr;         // Number of driver errors
   uint8_t state;                  // Current state
 #define MIP_STATE_DOWN 0          // Interface is down
 #define MIP_STATE_UP 1            // Interface is up
@@ -1522,7 +1525,7 @@ struct mip_spi {
 #if MG_ENABLE_MIP
 #if !defined(MG_ENABLE_DRIVER_STM32H) && !defined(MG_ENABLE_DRIVER_TM4C)
 #define MG_ENABLE_DRIVER_STM32 1
-#else 
+#else
 #define MG_ENABLE_DRIVER_STM32 0
 #endif
 #endif