[PATCH] arm64: STM32: drop an undefined Kconfig symbol

[Randy Dunlap]

Drop ARM_SMC_MBOX since it is not defined or used anywhere else
in the kernel source tree.

Fixes: 9e4e24414cc6 ("arm64: introduce STM32 family on Armv8 architecture")
Signed-off-by: Randy Dunlap <rdunlap at infradead.org>
---
Cc: Alexandre Torgue <alexandre.torgue at foss.st.com>
Cc: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
Cc: linux-stm32 at st-md-mailman.stormreply.com
Cc: linux-arm-kernel at lists.infradead.org
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will at kernel.org>

 arch/arm64/Kconfig.platforms |    1 -
 1 file changed, 1 deletion(-)

--- linux-next-20251219.orig/arch/arm64/Kconfig.platforms
+++ linux-next-20251219/arch/arm64/Kconfig.platforms
@@ -372,7 +372,6 @@ config ARCH_STM32
 	bool "STMicroelectronics STM32 SoC Family"
 	select GPIOLIB
 	select PINCTRL
-	select ARM_SMC_MBOX
 	select ARM_SCMI_PROTOCOL
 	select REGULATOR
 	select REGULATOR_ARM_SCMI