FROMLIST: BACKPORT: arm64: select ARCH_SUPPORTS_LTO_CLANG

Allow CONFIG_LTO_CLANG to be enabled for the architecture.

Bug: 62093296
Bug: 67506682
Change-Id: Id8e06b49877c4de2f15b51fc432d601b83b2c68f
(am from https://patchwork.kernel.org/patch/10060333/)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1eaa2ae..9a88aa4 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -15,6 +15,7 @@
 	select ARCH_HAS_SG_CHAIN
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_USE_CMPXCHG_LOCKREF
+	select ARCH_SUPPORTS_LTO_CLANG
 	select ARCH_SUPPORTS_ATOMIC_RMW
 	select ARCH_SUPPORTS_NUMA_BALANCING
 	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION