Add newline terminator at end of C files

Adds newline terminator at the end of a few C files to avoid compiler warnings.

Change-Id: I31fceb645800df10e99dc52014e94b7e6b47f92e
Signed-off-by: Robert Rostohar <Robert.Rostohar@arm.com>
diff --git a/bl2/ext/mcuboot/bootutil/src/loader.c b/bl2/ext/mcuboot/bootutil/src/loader.c
index e7c287b..5acf6bc 100644
--- a/bl2/ext/mcuboot/bootutil/src/loader.c
+++ b/bl2/ext/mcuboot/bootutil/src/loader.c
@@ -2832,4 +2832,4 @@
 boot_go(struct boot_rsp *rsp)
 {
     return context_boot_go(&boot_data, rsp);
-}
\ No newline at end of file
+}