cyclic: Use schedule() instead of WATCHDOG_RESET()

Globally replace all occurances of WATCHDOG_RESET() with schedule(),
which handles the HW_WATCHDOG functionality and the cyclic
infrastructure.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Rini <trini@konsulko.com> [am335x_evm, mx6cuboxi, rpi_3,dra7xx_evm, pine64_plus, am65x_evm, j721e_evm]

net/net.c

@@ -559,7 +559,7 @@ restart:
 	 *	someone sets `net_state' to a state that terminates.
 	 */
 	for (;;) {
-		WATCHDOG_RESET();
+		schedule();
 		if (arp_timeout_check() > 0)
 			time_start = get_timer(0);