package/optee-client: allow disabling RPMB emulation

Add configuration switch BR2_PACKAGE_OPTEE_CLIENT_RPMB_EMU to define
whether RPMB emulation is enabled or not. It is default enabled for
backward compatibility.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/optee-client/Config.in

@@ -24,6 +24,12 @@ config BR2_PACKAGE_OPTEE_CLIENT_TEE_FS_PATH
 	  normal world OS providing the actual storage via
 	  tee-supplicant.
 
+config BR2_PACKAGE_OPTEE_CLIENT_RPMB_EMU
+	bool "Enable RPMB emulation"
+	default y
+	help
+	  Enable RPMB device emulation in tee-supplicant.
+
 config BR2_PACKAGE_OPTEE_CLIENT_SUPP_PLUGINS
 	bool "Enable TEE supplicant plugins"
 	default y

package/optee-client/optee-client.mk

@@ -14,6 +14,12 @@ OPTEE_CLIENT_CONF_OPTS = \
 	-DCFG_TEE_FS_PARENT_PATH=$(BR2_PACKAGE_OPTEE_CLIENT_TEE_FS_PATH) \
 	-DCFG_WERROR=OFF
 
+ifeq ($(BR2_PACKAGE_OPTEE_CLIENT_RPMB_EMU),y)
+OPTEE_CLIENT_CONF_OPTS += -DRPMB_EMU=ON
+else
+OPTEE_CLIENT_CONF_OPTS += -DRPMB_EMU=OFF
+endif
+
 ifeq ($(BR2_PACKAGE_OPTEE_CLIENT_SUPP_PLUGINS),y)
 OPTEE_CLIENT_CONF_OPTS += -DCFG_TEE_SUPP_PLUGINS=ON
 else