MPC8xx: fix build problem for ETX094 board

Commit 58c583b "net: Check network device driver name" increased the
code size and broke building for the ETX094 board.

Adjust the linker script to make it build again.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/etx094/u-boot.lds b/board/etx094/u-boot.lds
index d4cea0c..b00d2b3 100644
--- a/board/etx094/u-boot.lds
+++ b/board/etx094/u-boot.lds
@@ -37,7 +37,6 @@
     net/libnet.o			(.text*)
     arch/powerpc/cpu/mpc8xx/libmpc8xx.o	(.text*)
     *(.text.printf)
-    *(.text.vprintf)
     *(.text.vsprintf)
 
     . = env_offset;