tee: optee: making OPTEE_SHM_NUM_PRIV_PAGES configurable via Kconfig

This change adds KCONFIG option to set number of pages out of
whole shared memory to be used for OP-TEE driver private data
structures.

Signed-off-by: Sahil Malhotra <[email protected]>

Author: sahilnxp

drivers/tee/optee/Kconfig

@@ -12,3 +12,11 @@ config OPTEE_BENCHMARK
 	help
 	  This enables benchmarking feature in the OP-TEE Trusted
 	  Execution Environment (TEE) driver.
+
+config OPTEE_SHM_NUM_PRIV_PAGES
+	int "Private Shared Memory Pages"
+	default 1
+	depends on OPTEE
+	help
+	  This sets the number of private shared memory pages to be
+	  used by OP-TEE TEE driver.

drivers/tee/optee/core.c

@@ -33,7 +33,7 @@
 
 #define DRIVER_NAME "optee"
 
-#define OPTEE_SHM_NUM_PRIV_PAGES	1
+#define OPTEE_SHM_NUM_PRIV_PAGES	CONFIG_OPTEE_SHM_NUM_PRIV_PAGES
 
 /**
  * optee_from_msg_param() - convert from OPTEE_MSG parameters to