Fix includes using iwyu tool

These changes are done by running iwyu manually under clang14.

IWYU can increase readability, make maintenance easier, and avoid errors
in some cases. See details in
```
https: //github.com/include-what-you-use/include-what-you-use/blob/master/docs/WhyIWYU.md.
```
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: Idaaeffd78c9ad7db2b41a057d40f889ade297c55
diff --git a/src/firmware_update.c b/src/firmware_update.c
index 59d1f9d..bd6ed9a 100644
--- a/src/firmware_update.c
+++ b/src/firmware_update.c
@@ -1,5 +1,7 @@
 #include "firmware_update.h"
+#include "utils.h"
 #include <endian.h>
+#include <stdbool.h>
 #include <string.h>
 
 /** @brief Check whether string type value is valid