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]
diff --git a/drivers/mtd/nand/core.c b/drivers/mtd/nand/core.c
index 090834a..99c2967 100644
--- a/drivers/mtd/nand/core.c
+++ b/drivers/mtd/nand/core.c
@@ -173,7 +173,7 @@
 	nanddev_offs_to_pos(nand, einfo->addr, &pos);
 	nanddev_offs_to_pos(nand, einfo->addr + einfo->len - 1, &last);
 	while (nanddev_pos_cmp(&pos, &last) <= 0) {
-		WATCHDOG_RESET();
+		schedule();
 		ret = nanddev_erase(nand, &pos);
 		if (ret) {
 			einfo->fail_addr = nanddev_pos_to_offs(nand, &pos);