Add m1n1-aurora and the silent uboot-asahi for Apple Silicon, aarch64 and edge only

Ported from the asahi-quattro lane. Both are pinned by hand like
linux-aurora and restricted to aarch64 and the edge channel from their
first merge, since merging publishes. pkgrel sits one above the fork
lanes' builds so the same filename never carries two sets of bytes.

pkgbuilds/uboot-asahi/disable-VBE-by-default.patch

@@ -0,0 +1,32 @@
+From d9e3a49bc2a29922da5bddd95772279f6edba802 Mon Sep 17 00:00:00 2001
+From: Peter Robinson <pbrobinson@gmail.com>
+Date: Fri, 18 Aug 2023 13:28:05 +0100
+Subject: [PATCH] disable VBE by default
+
+The VBE protocol needs explicit device support and as
+such isn't particularly useful by itself without that,
+it also adds size and the potential of an attack vector
+so devices that wish to use this protocol should
+explicitly opt in to it like all other large features
+in U-Boot.
+
+Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
+---
+ boot/Kconfig | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/boot/Kconfig b/boot/Kconfig
+index 30eb5b328d7..e8c3fbcb11d 100644
+--- a/boot/Kconfig
++++ b/boot/Kconfig
+@@ -635,7 +635,6 @@ config BOOTMETH_QFW
+ config BOOTMETH_VBE
+ 	bool "Bootdev support for Verified Boot for Embedded"
+ 	depends on FIT
+-	default y
+ 	select BOOTMETH_GLOBAL
+ 	select EVENT
+ 	help
+-- 
+2.49.0
+