soc: qcom: add build infrastructure

Add Kconfig / Makefiles to build rpmh and cmd-db drivers.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
new file mode 100644
index 0000000..4aa7833
--- /dev/null
+++ b/drivers/soc/qcom/Kconfig
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# QCOM Soc drivers
+#
+menuconfig SOC_QCOM
+	bool "Qualcomm SOC drivers support"
+	help
+	  Say Y here if you want to enable Qualcomm SOC drivers support.
+
+if SOC_QCOM
+
+config QCOM_COMMAND_DB
+	bool "Qualcomm Command DB"
+	help
+	  Command DB queries shared memory by key string for shared system
+	  resources. Platform drivers that require to set state of a shared
+	  resource on a RPM-hardened platform must use this database to get
+	  SoC specific identifier and information for the shared resources.
+
+config QCOM_RPMH
+	bool "Qualcomm RPMh support"
+	depends on QCOM_COMMAND_DB
+	help
+	  Say y here to support the Qualcomm RPMh (resource peripheral manager)
+	  if you need to control regulators on Qualcomm platforms, say y here.
+
+endif # SOC_QCOM