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>
diff --git a/board/actux3/u-boot.lds b/board/actux3/u-boot.lds
index 35aab29..4a1c75a 100644
--- a/board/actux3/u-boot.lds
+++ b/board/actux3/u-boot.lds
@@ -34,7 +34,7 @@
 		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)