MLK-19722-2 doc: imx: reorganize i.MX documentation

Currently the U-Boot doc/ directory contains the following files
that are only relevant for i.MX devices:

- doc/README.imx25
- doc/README.imx27
- doc/README.imx5
- doc/README.imx6
- doc/README.imximage
- doc/README.mxc_hab
- doc/README.mxs
- doc/README.mxsimage
- doc/README.sdp

Move all content to a common i.MX folder for a better documentation
structure.

Signed-off-by: Breno Lima <breno.lima@nxp.com>
(cherry picked from commit a5e99a185aa09dfe964d9ba3f435f2ec0374c033)

9 files changed, 0 insertions, 0 deletions

diff --git a/doc/README.imx25 b/doc/imx/README.imx25
index 0ca21b6dfe..0ca21b6dfe 100644
--- a/doc/README.imx25
+++ b/doc/imx/README.imx25
diff --git a/doc/README.imx27 b/doc/imx/README.imx27
index 6f92cb47ce..6f92cb47ce 100644
--- a/doc/README.imx27
+++ b/doc/imx/README.imx27
diff --git a/doc/README.imx5 b/doc/imx/README.imx5
index ea0e144ced..ea0e144ced 100644
--- a/doc/README.imx5
+++ b/doc/imx/README.imx5
diff --git a/doc/README.imx6 b/doc/imx/README.imx6
index b0644f8491..b0644f8491 100644
--- a/doc/README.imx6
+++ b/doc/imx/README.imx6
diff --git a/doc/README.imximage b/doc/imx/README.imximage
index 803682f558..803682f558 100644
--- a/doc/README.imximage
+++ b/doc/imx/README.imximage
diff --git a/doc/README.mxc_hab b/doc/imx/README.mxc_hab
index 75390a505e..75390a505e 100644
--- a/doc/README.mxc_hab
+++ b/doc/imx/README.mxc_hab
diff --git a/doc/README.mxs b/doc/imx/README.mxs
index e23ab9cc6d..e23ab9cc6d 100644
--- a/doc/README.mxs
+++ b/doc/imx/README.mxs
diff --git a/doc/README.mxsimage b/doc/imx/README.mxsimage
index c3975ee5e6..c3975ee5e6 100644
--- a/doc/README.mxsimage
+++ b/doc/imx/README.mxsimage
diff --git a/doc/README.sdp b/doc/imx/README.sdp
index 178ea688a7..178ea688a7 100644
--- a/doc/README.sdp
+++ b/doc/imx/README.sdp