zephyr: Fix mp_hal_set_interrupt_char() declaration to be compatible.

With other ports. Other ports declare it in mphalport.h, it can be
inline or macro.

1 files changed, 1 insertions, 0 deletions

diff --git a/zephyr/mphalport.h b/zephyr/mphalport.h
index 594bdd6d0..a634455a8 100644
--- a/zephyr/mphalport.h
+++ b/zephyr/mphalport.h
@@ -1,4 +1,5 @@
 #include <zephyr.h>
+#include "lib/utils/interrupt_char.h"
 
 static inline mp_uint_t mp_hal_ticks_us(void) {
     return sys_tick_get() * sys_clock_us_per_tick;