lsxl: convert to generic board and fix typo

Besides converting the LS-XHL and LS-CHLv2 to generic board, fix a typo
which accidentally reverted the bootsource to 'hdd' although the default
bootsource should be 'legacy'.

Cc: Tom Rini <trini@ti.com>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>

include/configs/lsxl.h

@@ -8,6 +8,8 @@
 #ifndef _CONFIG_LSXL_H
 #define _CONFIG_LSXL_H
 
+#define CONFIG_SYS_GENERIC_BOARD
+
 /*
  * Version number information
  */
@@ -157,7 +159,7 @@
 	"standard_env=setenv ipaddr; setenv netmask; setenv serverip; "	\
 		"setenv ncip; setenv gatewayip; setenv ethact; "	\
 		"setenv bootfile; setenv dnsip; "			\
-		"setenv bootsource hdd; run ser\0"			\
+		"setenv bootsource legacy; run ser\0"			\
 	"restore_env=run standard_env; saveenv; reset\0"		\
 	"ser=setenv stdin serial; setenv stdout serial; "		\
 		"setenv stderr serial\0"				\