jtag/commands: Use 'unsigned int' data type

This patch modifies as little code as possible in order to simplify the
review. Data types that are affected by these changes will be addresses
in following patches.

While at it, apply coding style fixes if these are not too extensive.

Change-Id: Ie048b3d472f546fecb6733f17f9d0f17fda40187
Signed-off-by: Marc Schink <dev@zapb.de>
Reviewed-on: https://review.openocd.org/c/openocd/+/8404
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

src/jtag/commands.h

@@ -36,7 +36,7 @@ struct scan_command {
 	/** instruction/not data scan */
 	bool ir_scan;
 	/** number of fields in *fields array */
-	int num_fields;
+	unsigned int num_fields;
 	/** pointer to an array of data scan fields */
 	struct scan_field *fields;
 	/** state in which JTAG commands should finish */
@@ -50,14 +50,14 @@ struct statemove_command {
 
 struct pathmove_command {
 	/** number of states in *path */
-	int num_states;
+	unsigned int num_states;
 	/** states that have to be passed */
 	tap_state_t *path;
 };
 
 struct runtest_command {
 	/** number of cycles to spend in Run-Test/Idle state */
-	int num_cycles;
+	unsigned int num_cycles;
 	/** state in which JTAG commands should finish */
 	tap_state_t end_state;
 };
@@ -65,7 +65,7 @@ struct runtest_command {
 
 struct stableclocks_command {
 	/** number of clock cycles that should be sent */
-	int num_cycles;
+	unsigned int num_cycles;
 };
 
 
@@ -100,7 +100,7 @@ struct sleep_command {
  */
 struct tms_command {
 	/** How many bits should be clocked out. */
-	unsigned num_bits;
+	unsigned int num_bits;
 	/** The bits to clock out; the LSB is bit 0 of bits[0]. */
 	const uint8_t *bits;
 };