mailbox: ti-msgmgr: Use %zu for size_t print format

message->len is of type size_t and %d is incorrect format usage.
Instead use %zu for handling size_t correctly.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
1 file changed