The TYPE_NPCM7XX_SMBUS device model exposes an SMBus, but
this isn't advertised with proper Kconfig symbol, leading
to an early build failure when building NPCM7XX machines
standalone:

  The following clauses were found for AT24C

      config AT24C depends on I2C
      select AT24C if NPCM7XX

Fix by adding SMBUS to NPCM7XX.

Fixes: 94e77879395 ("hw/i2c: Implement NPCM7XX SMBus Module Single Mode")
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/arm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 67723d9ea6a..85c6a1a088c 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -373,6 +373,7 @@ config NPCM7XX
     bool
     select A9MPCORE
     select ARM_GIC
+    select SMBUS
     select AT24C  # EEPROM
     select PL310  # cache controller
     select SERIAL
-- 
2.26.3