omap24xx: rename reset file

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

cpu/arm1136/omap24xx/Makefile

@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).a
 
-SOBJS	= start.o
+SOBJS	= reset.o
 
 COBJS	= timer.o