Use UUID API to export the UUID

Uses export_uuid() to export and uuid_t to an u8 array instead of depending
 on the internals of uuid_t.
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Merge tag 'optee-use-uuid-api-for-v5.10' of git://git.linaro.org:/people/jens.wiklander/linux-tee into arm/drivers

Use UUID API to export the UUID

Uses export_uuid() to export and uuid_t to an u8 array instead of depending
on the internals of uuid_t.

* tag 'optee-use-uuid-api-for-v5.10' of git://git.linaro.org:/people/jens.wiklander/linux-tee:
  tee: optee: Use UUID API for exporting the UUID

Link: https://lore.kernel.org/r/20201013063612.GA3325842@jade
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/tee/optee/device.c

@@ -98,7 +98,7 @@ static int __optee_enumerate_devices(u32 func)
 		return -ENODEV;
 
 	/* Open session with device enumeration pseudo TA */
-	memcpy(sess_arg.uuid, pta_uuid.b, TEE_IOCTL_UUID_LEN);
+	export_uuid(sess_arg.uuid, &pta_uuid);
 	sess_arg.clnt_login = TEE_IOCTL_LOGIN_PUBLIC;
 	sess_arg.num_params = 0;