Fix time components on rp2040 (#4024)

esphome/components/sntp/sntp_component.cpp

@@ -10,6 +10,9 @@
 #ifdef USE_ESP8266
 #include "sntp.h"
 #endif
+#ifdef USE_RP2040
+#include "lwip/apps/sntp.h"
+#endif
 
 // Yes, the server names are leaked, but that's fine.
 #ifdef CLANG_TIDY

esphome/components/time/real_time_clock.cpp

@@ -4,6 +4,9 @@
 #ifdef USE_ESP8266
 #include "sys/time.h"
 #endif
+#ifdef USE_RP2040
+#include <sys/time.h>
+#endif
 #include <cerrno>
 
 namespace esphome {