tree bbf75c3daf2494bd204dcce613ee440494fb882f
parent 8b879600e0c6cd0ee7afd5d127df85fc6ddf0469
author Thu Nguyen <thu@os.amperecomputing.com> 1719912641 +0000
committer Andrew Jeffery <andrew@codeconstruct.com.au> 1721011125 +0800

msgbuf: Add pldm_msgbuf_span_string_utf16()

Add pldm_msgbuf_span_string_utf16 API to return the start pointer of the
utf16 string in message buffer. The API also returns the UTF16 string
length in terms of bytes, including the NUL terminator.

```
__attribute__((always_inline)) static inline int
pldm_msgbuf_span_string_utf16(struct pldm_msgbuf *ctx, void **cursor,
			      size_t *length)
```

The `cursor` and `length` are optional. Input NULL to `cursor` and
`length` will cause the message buffer cursor points to remaining data.
The caller can ignore `length` option by input NULL if they don't care
about the size of utf16 string.

Change-Id: I1fc2865a21d9925e49416531b85212b3b07dc37a
Signed-off-by: Thu Nguyen <thu@os.amperecomputing.com>
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>