fix warnings cast function type for nrf, fix pico osal warning

add TODO for overflow in tusb_fifo.c

src/common/tusb_fifo.c

@@ -325,6 +325,8 @@ static uint16_t advance_pointer(tu_fifo_t* f, uint16_t p, uint16_t offset)
   // We limit the index space of p such that a correct wrap around happens
   // Check for a wrap around or if we are in unused index space - This has to be checked first!!
   // We are exploiting the wrap around to the correct index
+
+  // TODO warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow]
   if ((p > p + offset) || (p + offset > f->max_pointer_idx))
   {
     p = (p + offset) + f->non_used_index_space;