README: Update to use new repository names

  - Update title description
  - Update to new layers names
  - Update git format-patch subject-prefix

Change-Id: I3904a782b17af868dd363bbce552e9afbce90167
Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

README

-OpenEmbedded/Yocto layer for Freescale's Demonstration images
+OpenEmbedded/Yocto layer for Freescale's Distribution images
 =============================================================
 
 This layer provides support for Freescale's Demonstration images for
@@ -14,7 +14,7 @@ URI: git://git.openembedded.org/meta-openembedded
 branch: master
 revision: HEAD
 
-URI: git://git.yoctoproject.org/meta-fsl-arm
+URI: git://git.yoctoproject.org/meta-freescale
 branch: master
 revision: HEAD
 
@@ -30,11 +30,11 @@ Mailing list:
 
 Source code:
 
-    https://github.com/Freescale/meta-fsl-demos
+    https://github.com/Freescale/meta-freescale-distro
 
 When creating a patch of the last commit, use
 
-    git format-patch -s --subject-prefix='meta-fsl-demos][PATCH' -1
+    git format-patch -s --subject-prefix='distro][PATCH' -1
 
 To send it to the community, use