arm64: remove arch specific earlyprintk

Now that we have equivalent earlycon support, arm64's earlyprintk code
can be removed.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/arm64/Kconfig.debug

@@ -20,15 +20,6 @@ config STRICT_DEVMEM
 
 	  If in doubt, say Y.
 
-config EARLY_PRINTK
-	bool "Early printk support"
-	default y
-	help
-	  Say Y here if you want to have an early console using the
-	  earlyprintk=<name>[,<addr>][,<options>] kernel parameter. It
-	  is assumed that the early console device has been initialised
-	  by the boot loader prior to starting the Linux kernel.
-
 config PID_IN_CONTEXTIDR
 	bool "Write the current PID to the CONTEXTIDR register"
 	help