mkimage: Add OMAP boot image support

- Add mkimage support for OMAP boot image
- Add support for OMAP boot image(MLO) generation in the new
  SPL framework

Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

arch/arm/cpu/armv7/omap4/config.mk

@@ -0,0 +1,30 @@
+#
+# Copyright 2011 Linaro Limited
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# (C) Copyright 2010
+# Texas Instruments, <www.ti.com>
+#
+# Aneesh V <aneesh@ti.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+ifdef CONFIG_SPL_BUILD
+ALL-y	+= $(OBJTREE)/MLO
+else
+ALL-y	+= $(obj)u-boot.img
+endif