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/arm_disassembler.h

@@ -171,7 +171,7 @@ struct arm_instruction {
 	uint32_t opcode;
 
 	/* return value ... Thumb-2 sizes vary */
-	unsigned instruction_size;
+	unsigned int instruction_size;
 
 	union {
 		struct arm_b_bl_bx_blx_instr b_bl_bx_blx;