copyright: add missing license

Solderpad Hardware License

Signed-off-by: Alexandre Mergnat <[email protected]>

Author: amergnat

include/arch/riscv/csr.h

@@ -1,6 +1,8 @@
 /*
+ * Copyright (c) 2020 Michael Schaffner
  * Copyright (c) 2020 BayLibre, SAS
  *
+ * SPDX-License-Identifier: SHL-0.51
  * SPDX-License-Identifier: Apache-2.0
  */
 

soc/riscv/riscv-ite/common/encoding.h

@@ -1,8 +1,9 @@
 /*
+ * Copyright (c) 2020 Michael Schaffner
  * Copyright (c) 2020 ITE Corporation. All Rights Reserved.
  *
+ * SPDX-License-Identifier: SHL-0.51
  * SPDX-License-Identifier: Apache-2.0
- *
  */
 
 #ifndef RISCV_CSR_ENCODING_H