x86: sandbox: pch: Add a CONFIG option for PCH
At present this uclass is selected only on x86. In order to add a test for
it, it must also support sandbox. Create a new CONFIG_PCH option and
enable it on x86 and sandbox.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/pch/Kconfig b/drivers/pch/Kconfig
new file mode 100644
index 0000000..18f006d
--- /dev/null
+++ b/drivers/pch/Kconfig
@@ -0,0 +1,9 @@
+config PCH
+ bool "Enable Platform-controller Hub (PCH) support"
+ depends on X86 || SANDBOX
+ help
+ Most x86 chips include a PCH which is responsible for handling
+ parts of the system not handled by that CPU. It supersedes the
+ northbridge / southbridge architecture that was previously used. The
+ PCH allows for higher performance since the memory functions are
+ handled in the CPU.