Change all '$(...)' variable references into '${...}'
which makes the environment compatible with the hush shell.
WARNING: Support for the old '$(...)' syntax will be
discontinued in a later version.
diff --git a/include/configs/IAD210.h b/include/configs/IAD210.h
index 32d59a4..35d84ae 100644
--- a/include/configs/IAD210.h
+++ b/include/configs/IAD210.h
@@ -71,8 +71,8 @@
 #undef	CONFIG_BOOTARGS
 /* #define CONFIG_BOOTCOMMAND							\
  	"bootp;" 								\
- 	"setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) " 	\
- 	"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off;" 	\
+ 	"setenv bootargs root=/dev/nfs rw nfsroot=${serverip}:${rootpath} " 	\
+ 	"ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off;" 	\
  	"bootm"
 */