hv: fix 'No brackets to then/else'

- add missing brackets for 'if/else' statements based on MISRA-C
  requirements

v1 -> v2:
 * add brackets for each conditions in 'if' statements to improve
   the readability
 * modify 'ptdev_init' to make the logic clearer

Tracked-On: #861
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>

hypervisor/debug/logmsg.c

@@ -128,8 +128,9 @@ void do_logmsg(uint32_t severity, const char *fmt, ...)
 	va_end(args);
 
 	/* Check if flags specify to output to NPK */
-	if (do_npk_log)
+	if (do_npk_log) {
 		npk_log_write(buffer, strnlen_s(buffer, LOG_MESSAGE_MAX_SIZE));
+	}
 
 	/* Check if flags specify to output to stdout */
 	if (do_console_log) {