Commit 7abb479c7ab ("PPC: E500: Add FSL I2C controller and integrate
RTC with it") added a global dependency on the DS1338 model, instead
of a machine one (via Kconfig). This gives trouble when building
standalone machines not exposing I2C bus:

  The following clauses were found for DS1338

      CONFIG_DS1338=y
      config DS1338 depends on I2C

Fix by selecting the DS1338 symbol in the single machine requiring
it, the E500.

Fixes: 7abb479c7ab ("PPC: E500: Add FSL I2C controller and integrate RTC with it")
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210513163858.3928976-9-philmd@redhat.com>
---
 configs/devices/ppc-softmmu/default.mak | 1 -
 hw/ppc/Kconfig                          | 1 +
 2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/configs/devices/ppc-softmmu/default.mak b/configs/devices/ppc-softmmu/default.mak
index 4535993d8d5..658a454426e 100644
--- a/configs/devices/ppc-softmmu/default.mak
+++ b/configs/devices/ppc-softmmu/default.mak
@@ -1,7 +1,6 @@
 # Default configuration for ppc-softmmu
 
 # For embedded PPCs:
-CONFIG_DS1338=y
 CONFIG_E500=y
 CONFIG_PPC405=y
 CONFIG_PPC440=y
diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
index 322a7eb031e..85b9c93f02e 100644
--- a/hw/ppc/Kconfig
+++ b/hw/ppc/Kconfig
@@ -130,6 +130,7 @@ config E500
     select SERIAL
     select MPC_I2C
     select FDT_PPC
+    select DS1338
 
 config VIRTEX
     bool
-- 
2.31.1