ARM: alpine: Drop unused includes

of_platform.h is not needed, drop it.
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230803-dt-header-cleanups-for-soc-v2-3-d8de2cc88bff@kernel.orgSigned-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-alpine/alpine_machine.c

@@ -5,8 +5,6 @@
  * Copyright (C) 2015 Annapurna Labs Ltd.
  */
 
-#include <linux/of_platform.h>
-
 #include <asm/mach/arch.h>
 
 static const char * const al_match[] __initconst = {