sunxi-6.11: Fix build dtb package

Armbian uses subdirectories <overlay> for arm
and <allwinner/overlay> for arm64.
Delete the vendor's directory if the target architecture
is an arm.

patch/kernel/archive/sunxi-6.11/patches.armbian/scripts-add-overlay-compilation-support.patch

@@ -1,13 +1,13 @@
-From 0184e44b9caf2fa96cc058f0bb34fd5ca4ca4498 Mon Sep 17 00:00:00 2001
+From 9834ff87ee93495982c223bea78206bda5955e89 Mon Sep 17 00:00:00 2001
 From: The-going <48602507+The-going@users.noreply.github.com>
 Date: Tue, 1 Feb 2022 21:04:08 +0300
 Subject: scripts: add overlay compilation support
 
 ---
  .gitignore               |  1 +
- scripts/Makefile.dtbinst |  9 ++++++++-
+ scripts/Makefile.dtbinst | 12 +++++++++++-
  scripts/Makefile.lib     | 12 +++++++++++-
- 3 files changed, 20 insertions(+), 2 deletions(-)
+ 3 files changed, 23 insertions(+), 2 deletions(-)
 
 diff --git a/.gitignore b/.gitignore
 index 58fdbb35e2f1..0d683e66d33b 100644
@@ -22,7 +22,7 @@ index 58fdbb35e2f1..0d683e66d33b 100644
  *.so.dbg
  *.su
 diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
-index 9d920419a62c..b66af344040d 100644
+index 9d920419a62c..d0703c2148cf 100644
 --- a/scripts/Makefile.dtbinst
 +++ b/scripts/Makefile.dtbinst
 @@ -23,6 +23,11 @@ $(dst)/%: $(obj)/%
@@ -37,14 +37,17 @@ index 9d920419a62c..b66af344040d 100644
 
  ifdef CONFIG_ARCH_WANT_FLAT_DTB_INSTALL
 
-@@ -33,7 +38,9 @@ endef
+@@ -33,7 +38,12 @@ endef
 
  $(foreach d, $(sort $(dir $(dtbs))), $(eval $(call gen_install_rules,$(d))))
 
 -dtbs := $(notdir $(dtbs))
-+# Armbian uses subdirectories <overlay> but not <allwinner/overlay>.
-+# delete the vendor's directory
++# Armbian uses subdirectories <overlay> for arm
++# and <allwinner/overlay> for arm64.
++# delete the vendor's directory if the target architecture is an arm.
++ifdef CONFIG_ARM
 +dtbs := $(patsubst $(vendor)%,%,$(dtbs))
++endif
 
  endif # CONFIG_ARCH_WANT_FLAT_DTB_INSTALL