i386: Fix dlmalloc compile warning

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>

board/eNET/config.mk

@@ -22,3 +22,4 @@
 #
 
 TEXT_BASE = 0x38040000
+CFLAGS_dlmalloc.o += -Wa,--no-warn -fno-strict-aliasing