hawkboard: Add CONFIG_SPL_LIBGENERIC_SUPPORT

With older toolchains we need CONFIG_SPL_LIBGENERIC_SUPPORT in order for
CONFIG_SPL_NAND_SUPPORT to link.

Signed-off-by: Tom Rini <trini@ti.com>

include/configs/hawkboard.h

@@ -62,6 +62,7 @@
 #define CONFIG_SPL_NAND_SUPPORT
 #define CONFIG_SPL_NAND_SIMPLE
 #define CONFIG_SPL_NAND_LOAD
+#define CONFIG_SPL_LIBGENERIC_SUPPORT	/* for udelay and __div64_32 for NAND */
 #define CONFIG_SPL_SERIAL_SUPPORT
 #define CONFIG_SPL_LDSCRIPT		"board/$(BOARDDIR)/u-boot-spl-hawk.lds"
 #define CONFIG_SPL_TEXT_BASE		0xc1080000