arm64: dts: amazon: rename al folder to be amazon

As preparation to add device tree binding for Amazon's Annapurna Labs
Alpine v3 support. Rename al device tree folder to be amazon.

Link: https://lore.kernel.org/r/20200724132654.16549-3-hhhawa@amazon.com
Signed-off-by: Hanna Hawa <hhhawa@amazon.com>
Acked-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

MAINTAINERS

@@ -1617,7 +1617,7 @@ L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/boot/dts/alpine*
 F:	arch/arm/mach-alpine/
-F:	arch/arm64/boot/dts/al/
+F:	arch/arm64/boot/dts/amazon/
 F:	drivers/*/*alpine*
 
 ARM/ARTPEC MACHINE SUPPORT

arch/arm64/boot/dts/Makefile

@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 subdir-y += actions
-subdir-y += al
 subdir-y += allwinner
 subdir-y += altera
+subdir-y += amazon
 subdir-y += amd
 subdir-y += amlogic
 subdir-y += apm