With ELDK4.2 libserial.o is too large to fit in the area before the
environment.  Swap in libinput instead which is a little smaller.
Cc: Michael Schwingen <michael@schwingen.org>
Signed-off-by: Tom Rini <trini@ti.com>
                net/libnet.o(.text*)
                board/actux1/libactux1.o(.text*)
                arch/arm/cpu/ixp/libixp.o(.text*)
-               drivers/serial/libserial.o(.text*)
+               drivers/input/libinput.o(.text*)
 
                . = env_offset;
                common/env_embedded.o(.ppcenv)
 
                net/libnet.o(.text*)
                board/actux2/libactux2.o(.text*)
                arch/arm/cpu/ixp/libixp.o(.text*)
-               drivers/serial/libserial.o(.text*)
+               drivers/input/libinput.o(.text*)
 
                . = env_offset;
                common/env_embedded.o(.ppcenv)
 
                net/libnet.o(.text*)
                board/actux3/libactux3.o(.text*)
                arch/arm/cpu/ixp/libixp.o(.text*)
-               drivers/serial/libserial.o(.text*)
+               drivers/input/libinput.o(.text*)
 
                . = env_offset;
                common/env_embedded.o(.ppcenv)