actux[123]: Update linker script for ELDK 4.2

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>

board/actux1/u-boot.lds

@@ -34,7 +34,7 @@ SECTIONS
 		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)

board/actux2/u-boot.lds

@@ -34,7 +34,7 @@ SECTIONS
 		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)

board/actux3/u-boot.lds

@@ -34,7 +34,7 @@ SECTIONS
 		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)