target: convert 'unsigned' to 'unsigned int'

Conversion done with
	checkpatch --fix-inplace -types UNSPECIFIED_INT

Ignore the cast as they could be better addressed.
Fix only minor additional checkpatch issue (spacing and line
length).

Use Checkpatch-ignore below for the function pointers in the file
'armv7a_cache_l2x.h' that do not assign the identifier names to
the function arguments.
Most of these struct are unused and should be fixed or dropped.

Checkpatch-ignore: FUNCTION_ARGUMENTS

Change-Id: I8f27e68eb3502e431c1ba801b362358105f9f2dc
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8480
Tested-by: jenkins
Reviewed-by: zapb <dev@zapb.de>

src/target/dsp5680xx.c

@@ -1172,7 +1172,7 @@ static int dsp5680xx_read(struct target *t, target_addr_t a, uint32_t size,
 	dsp5680xx_context.flush = 0;
 	int counter = FLUSH_COUNT_READ_WRITE;
 
-	for (unsigned i = 0; i < count; i++) {
+	for (unsigned int i = 0; i < count; i++) {
 		if (--counter == 0) {
 			dsp5680xx_context.flush = 1;
 			counter = FLUSH_COUNT_READ_WRITE;