Provide an easy way to disable cyw43 logging (#2535)

* Provide an easy way to disable cyw43 logging

All cyw43 logging uses CYW43_PRINTF by default. To disable logging you
have to define this to do nothing. There's no simple way to achieve
this. Make it easier by adding PICO_CYW43_LOGGING_ENABLED which can be
set to zero to disable CYW43_PRINTF.

Fixes #2523

* teensy style change

---------

Co-authored-by: Graham Sanderson <[email protected]>

Author: peterharperuk

src/rp2_common/pico_cyw43_driver/include/cyw43_configport.h

@@ -198,9 +198,18 @@ void cyw43_post_poll_hook(void);
 #define cyw43_free free
 #endif
 
+// PICO_CONFIG: PICO_CYW43_LOGGING_ENABLED, Enable/disable CYW43_PRINTF used for logging in cyw43 components. Has no effect if CYW43_PRINTF is defined by the user, default=1, type=bool, group=pico_cyw43_driver
+#ifndef PICO_CYW43_LOGGING_ENABLED
+#define PICO_CYW43_LOGGING_ENABLED 1
+#endif
+
+#if !defined(CYW43_PRINTF) && !PICO_CYW43_LOGGING_ENABLED
+#define CYW43_PRINTF(...) (void)0
+#endif
+
 #ifdef __cplusplus
 }
 #endif
 
 
-#endif
+#endif