image: android-dt: add dt_for_each_entry() to iterate over all dt entry of DT image

Change-Id: I4db1e1da0d55701798bb8c296dd58e26592ef3c8
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>

FROMLIST: common: Add support for Android DT image

Android documentation recommends new image format for storing DTB/DTBO
files: [1]. To support that format, this patch adds helper functions for
And

FROMLIST: common: Add support for Android DT image

Android documentation recommends new image format for storing DTB/DTBO
files: [1]. To support that format, this patch adds helper functions for
Android DTB/DTBO format. In image-android-dt.* files you can find helper
functions to work with Android DT image format, such us routines for:
- printing the dump of image structure
- getting the address and size of desired dtb/dtbo file

This patch uses dt_table.h file, that was added in 643cefa4d848 ("Import
Android's dt_table.h for DT image format") by Alex Deymo.

[1] https://source.android.com/devices/architecture/dto/partitions

Change-Id: I78f6750af6c4fecb80d331bc06bc5cbe98da5825
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Zhangbin Tong <zebulun.tong@rock-chips.com>
(am from http://patchwork.ozlabs.org/patch/925870/)

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