Mirror Earl's master branch more closely

Restored some submodules and added files from Earl's master branch to
better mirror his repo. This is in hope of making easier merges when
he release new commits.

Author: morio

cores/rp2040/cyw43_wrappers.h

@@ -26,12 +26,12 @@ extern bool __isPicoW;
 #ifdef __cplusplus
 extern "C" {
 #endif
-    void init_cyw43_wifi();
-    void __lockBluetooth();
-    void __unlockBluetooth();
-    void cyw43_pinMode(pin_size_t pin, PinMode mode);
-    void cyw43_digitalWrite(pin_size_t pin, PinStatus val);
-    PinStatus cyw43_digitalRead(pin_size_t pin);
+void init_cyw43_wifi();
+void __lockBluetooth();
+void __unlockBluetooth();
+void cyw43_pinMode(pin_size_t pin, PinMode mode);
+void cyw43_digitalWrite(pin_size_t pin, PinStatus val);
+PinStatus cyw43_digitalRead(pin_size_t pin);
 #ifdef __cplusplus
 }
 #endif

cores/rp2040/lwip_wrap.cpp

@@ -26,9 +26,7 @@
 #include <lwip/dns.h>
 #include <lwip/raw.h>
 #include <lwip/timeouts.h>
-#ifdef PICO_CYW43_SUPPORTED
 #include <pico/cyw43_arch.h>
-#endif
 #include <pico/mutex.h>
 #include <sys/lock.h>
 #include "_xoshiro.h"