arm, spl: add watchdog library to SPL

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Tom Rini <trini@ti.com>

doc/README.SPL

@@ -67,7 +67,7 @@ CONFIG_SPL_POST_MEM_SUPPORT (post/drivers/memory.o)
 CONFIG_SPL_NAND_LOAD (drivers/mtd/nand/nand_spl_load.o)
 CONFIG_SPL_SPI_LOAD (drivers/mtd/spi/spi_spl_load.o)
 CONFIG_SPL_RAM_DEVICE (common/spl/spl.c)
-
+CONFIG_SPL_WATCHDOG_SUPPORT (drivers/watchdog/libwatchdog.o)
 
 Normally CPU is assumed to be the same between the SPL and normal
 u-boot build.  However it is possible to specify a different CPU for

spl/Makefile

@@ -82,6 +82,7 @@ LIBS-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/libnet.o
 LIBS-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/phy/libphy.o
 LIBS-$(CONFIG_SPL_MUSB_NEW_SUPPORT) += drivers/usb/musb-new/libusb_musb-new.o
 LIBS-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/usb/gadget/libusb_gadget.o
+LIBS-$(CONFIG_SPL_WATCHDOG_SUPPORT) += drivers/watchdog/libwatchdog.o
 
 ifneq ($(CONFIG_OMAP_COMMON),)
 LIBS-y += $(CPUDIR)/omap-common/libomap-common.o