rp2: Switch rp2 and drivers to use new event functions.

This commit changes all uses in the rp2 port, and drivers that are
optionally supported by that port.

The old MICROPY_EVENT_POLL_HOOK and MICROPY_EVENT_POLL_HOOK_FAST macros are
no longer used for rp2 builds and are removed (C user code will need to be
changed to suit).

Also take the opportunity to change some timeouts that used 64-bit
arithmetic to 32-bit, to hopefully claw back a little code size.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>

ports/rp2/mpconfigport.h

@@ -249,18 +249,19 @@ extern const struct _mp_obj_type_t mod_network_nic_type_wiznet5k;
 #define MICROPY_PY_LWIP_REENTER lwip_lock_acquire();
 #define MICROPY_PY_LWIP_EXIT    lwip_lock_release();
 
-#define MICROPY_EVENT_POLL_HOOK_FAST \
-    do { \
-        extern void mp_handle_pending(bool); \
-        mp_handle_pending(true); \
+// Port level Wait-for-Event macro
+//
+// Do not use this macro directly, include py/runtime.h and
+// call mp_event_wait_indefinite() or mp_event_wait_ms(timeout)
+#define MICROPY_INTERNAL_WFE(TIMEOUT_MS) \
+    do {                                 \
+        if ((TIMEOUT_MS) < 0) { \
+            __wfe(); \
+        } else { \
+            best_effort_wfe_or_timeout(make_timeout_time_ms(TIMEOUT_MS)); \
+        } \
     } while (0)
 
-#define MICROPY_EVENT_POLL_HOOK \
-    do { \
-        MICROPY_EVENT_POLL_HOOK_FAST; \
-        __wfe(); \
-    } while (0);
-
 #define MICROPY_MAKE_POINTER_CALLABLE(p) ((void *)((mp_uint_t)(p) | 1))
 
 #define MP_SSIZE_MAX (0x7fffffff)