zephyr: replace zephyr integer types with C99 types

	git grep -l 'u\(8\|16\|32\|64\)_t' | \
		xargs sed -i "s/u\(8\|16\|32\|64\)_t/uint\1_t/g"
	git grep -l 's\(8\|16\|32\|64\)_t' | \
		xargs sed -i "s/s\(8\|16\|32\|64\)_t/int\1_t/g"

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
diff --git a/kernel/mutex.c b/kernel/mutex.c
index 3181966..551cbe2 100644
--- a/kernel/mutex.c
+++ b/kernel/mutex.c
@@ -93,7 +93,7 @@
 #include <syscalls/k_mutex_init_mrsh.c>
 #endif
 
-static s32_t new_prio_for_inheritance(s32_t target, s32_t limit)
+static int32_t new_prio_for_inheritance(int32_t target, int32_t limit)
 {
 	int new_prio = z_is_prio_higher(target, limit) ? target : limit;
 
@@ -102,7 +102,7 @@
 	return new_prio;
 }
 
-static bool adjust_owner_prio(struct k_mutex *mutex, s32_t new_prio)
+static bool adjust_owner_prio(struct k_mutex *mutex, int32_t new_prio)
 {
 	if (mutex->owner->base.prio != new_prio) {