[PATCH 06/10] hw/riscv/Kconfig: Add missing dependency MICROCHIP_PFSOC -> SERIAL

[Philippe Mathieu-Daudé]

Commit a8fb0a500a6 ("hw/char: Add Microchip PolarFire SoC MMUART
emulation") added a dependency on the SERIAL model, but forgot to
add the Kconfig selector. Fix that to solve when built the
MICROCHIP_PFSOC machine stand-alone:

  /usr/bin/ld: libcommon.fa.p/hw_char_mchp_pfsoc_mmuart.c.o: in function 
`mchp_pfsoc_mmuart_create':
  hw/char/mchp_pfsoc_mmuart.c:79: undefined reference to `serial_mm_init'

Fixes: a8fb0a500a6 ("hw/char: Add Microchip PolarFire SoC MMUART emulation")
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
Cc: Bin Meng <bin.meng@windriver.com>
Cc: Alistair Francis <alistair.francis@wdc.com>
---
 hw/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig
index 86957ec7b06..b72a248809e 100644
--- a/hw/riscv/Kconfig
+++ b/hw/riscv/Kconfig
@@ -12,6 +12,7 @@ config MICROCHIP_PFSOC
     select SIFIVE_CLINT
     select SIFIVE_PDMA
     select SIFIVE_PLIC
+    select SERIAL
     select UNIMP
 
 config OPENTITAN
-- 
2.26.3