xtensa: Remove arch_setup_bdinfo()

arch_setup_bdinfo() only configures the deprecated bi_memstart &
bi_memsize values, which should not be needed any more. Lets remove
this file completely.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Ovidiu Panait <ovidiu.panait@windriver.com>
diff --git a/arch/xtensa/lib/Makefile b/arch/xtensa/lib/Makefile
index ceee59b..c59df7d 100644
--- a/arch/xtensa/lib/Makefile
+++ b/arch/xtensa/lib/Makefile
@@ -5,4 +5,4 @@
 
 obj-$(CONFIG_CMD_BOOTM) += bootm.o
 
-obj-y 	+= cache.o misc.o relocate.o time.o bdinfo.o
+obj-y 	+= cache.o misc.o relocate.o time.o