efi_loader: no support for ARMV7_NONSEC=y

We do not support bootefi booting ARMv7 in non-secure mode.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/doc/README.uefi b/doc/README.uefi
index 7403be3..bb89b7a 100644
--- a/doc/README.uefi
+++ b/doc/README.uefi
@@ -324,6 +324,8 @@
   * persistence
   * runtime support
 
+* support bootefi booting ARMv7 in non-secure mode (CONFIG_ARMV7_NONSEC=y)
+
 ## Links
 
 * [1](http://uefi.org/specifications)