Change all '$(...)' variable references into '${...}'
which makes the environment compatible with the hush shell.
WARNING: Support for the old '$(...)' syntax will be
discontinued in a later version.
diff --git a/include/configs/CPU87.h b/include/configs/CPU87.h
index c50870f..a23d7e5 100644
--- a/include/configs/CPU87.h
+++ b/include/configs/CPU87.h
@@ -122,8 +122,8 @@
 #undef	CONFIG_BOOTARGS
 #define CONFIG_BOOTCOMMAND							\
 	"bootp; "								\
-	"setenv bootargs root=/dev/nfs rw nfsroot=$(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"
 
 /*-----------------------------------------------------------------------