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]

post/cpu/mpc83xx/ecc.c

@@ -73,7 +73,7 @@ int ecc_post_test(int flags)
 	for (addr = (u64*)CONFIG_SYS_POST_ECC_START_ADDR, errbit=0;
 	     addr < (u64*)CONFIG_SYS_POST_ECC_STOP_ADDR; addr++, errbit++ ) {
 
-		WATCHDOG_RESET();
+		schedule();
 
 		ecc_clear(ddr);