Merge branch 'schneider/mp-sleep-64bit-fix' into 'master'

mp: fix 32 bit overflow in systick_get_us

See merge request !497

pycardium/mphalport.c

@@ -26,7 +26,7 @@
 
 /* Target systick interval is 1 second */
 #define SYSTICK_INTERVAL_US                                                    \
-	(SYSTICK_INTERVAL_US_MIN * (1000000 / SYSTICK_INTERVAL_US_MIN))
+	(SYSTICK_INTERVAL_US_MIN * (1000000LL / SYSTICK_INTERVAL_US_MIN))
 
 /*
  * Copied from core_cm4.h and modified to select the