MIPS: loongson64: drop HAVE_ARCH_NODEDATA_EXTENSION

Commit f8f9f21c7848 ("MIPS: Fix build error for loongson64 and sgi-ip27")
added HAVE_ARCH_NODEDATA_EXTENSION to loongson64 to silence a compilation
error that happened because loongson64 didn't define array of pg_data_t as
node_data like most other architectures did.

After rename of __node_data to node_data arch_alloc_nodedata() and
HAVE_ARCH_NODEDATA_EXTENSION can be dropped from loongson64.

Since it was the only user of HAVE_ARCH_NODEDATA_EXTENSION config option
also remove this option from arch/mips/Kconfig.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Mike Rapoport (Microsoft) <[e-mail]>
Reviewed-by: Jonathan Cameron <[e-mail]>
Tested-by: Jonathan Cameron <[e-mail]> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <[e-mail]>
Acked-by: David Hildenbrand <[e-mail]>
Cc: Alexander Gordeev <[e-mail]>
Cc: Andreas Larsson <[e-mail]>
Cc: Arnd Bergmann <[e-mail]>
Cc: Borislav Petkov <[e-mail]>
Cc: Catalin Marinas <[e-mail]>
Cc: Christophe Leroy <[e-mail]>
Cc: Dave Hansen <[e-mail]>
Cc: Davidlohr Bueso <[e-mail]>
Cc: David S. Miller <[e-mail]>
Cc: Greg Kroah-Hartman <[e-mail]>
Cc: Heiko Carstens <[e-mail]>
Cc: Huacai Chen <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Jiaxun Yang <[e-mail]>
Cc: John Paul Adrian Glaubitz <[e-mail]>
Cc: Jonathan Corbet <[e-mail]>
Cc: Michael Ellerman <[e-mail]>
Cc: Palmer Dabbelt <[e-mail]>
Cc: Rafael J. Wysocki <[e-mail]>
Cc: Rob Herring (Arm) <[e-mail]>
Cc: Samuel Holland <[e-mail]>
Cc: Thomas Bogendoerfer <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Vasily Gorbik <[e-mail]>
Cc: Will Deacon <[e-mail]>
Cc: Zi Yan <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

arch/mips/Kconfig

···
 	select USE_OF
 	select BUILTIN_DTB
 	select PCI_HOST_GENERIC
-	select HAVE_ARCH_NODEDATA_EXTENSION if NUMA
 	help
 	  This enables the support of Loongson-2/3 family of machines.
 
···
 	  disabled.
 
 config SYS_SUPPORTS_NUMA
-	bool
-
-config HAVE_ARCH_NODEDATA_EXTENSION
 	bool
 
 config RELOCATABLE

arch/mips/loongson64/numa.c

···
 	pr_info("CP0_PageGrain: CP0 5.1 (0x%x)\n", read_c0_pagegrain());
 	prom_meminit();
 }
-
-pg_data_t * __init arch_alloc_nodedata(int nid)
-{
-	return memblock_alloc(sizeof(pg_data_t), SMP_CACHE_BYTES);
-}
-
-void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
-{
-	node_data[nid] = pgdat;
-}