misc_utils: Move byte_swap function to new misc_utils.c file

This function will be used in different places in the code, so I moved it
to a separate file.

Signed-off-by: Adrian Warecki <adrian.warecki@intel.com>

CMakeLists.txt

@@ -22,6 +22,7 @@ add_executable(rimage
 	src/rimage.c
 	src/toml_utils.c
 	src/adsp_config.c
+	src/misc_utils.c
 	src/file_utils.c
 	tomlc99/toml.c
 )

src/include/rimage/misc_utils.h

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright(c) 2023 Intel Corporation. All rights reserved.
+ */
+
+#include <stdint.h>
+
+/**
+ * Reverses the order of bytes in the array
+ * @param ptr pointer to a array
+ * @param size of the array
+ */
+void bytes_swap(uint8_t *ptr, uint32_t size);

src/misc_utils.c

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright(c) 2018-2023 Intel Corporation. All rights reserved.
+ */
+
+#include <rimage/misc_utils.h>
+
+void bytes_swap(uint8_t *ptr, uint32_t size)
+{
+	uint8_t tmp;
+	uint32_t index;
+
+	for (index = 0; index < (size / 2); index++) {
+		tmp = ptr[index];
+		ptr[index] = ptr[size - 1 - index];
+		ptr[size - 1 - index] = tmp;
+	}
+}

src/pkcs1_5.c

@@ -23,6 +23,7 @@
 #include <rimage/rimage.h>
 #include <rimage/css.h>
 #include <rimage/manifest.h>
+#include <rimage/misc_utils.h>
 
 #define DEBUG_PKCS	0
 
@@ -33,18 +34,6 @@ enum manver {
 	VACE15 = 3
 };
 
-static void bytes_swap(uint8_t *ptr, uint32_t size)
-{
-	uint8_t tmp;
-	uint32_t index;
-
-	for (index = 0; index < (size / 2); index++) {
-		tmp = ptr[index];
-		ptr[index] = ptr[size - 1 - index];
-		ptr[size - 1 - index] = tmp;
-	}
-}
-
 static int rimage_read_key(EVP_PKEY **privkey, struct image *image)
 {
 	char path[256];