include: ipc_logging: fix compile error

When disable CONFIG_IPC_LOGGING, the EINVAL will be used but
undefined. Include the err.h to fix the compiling error.

Change-Id: I82c3ef8f54e6639a93cc293a5d2d80caa76beddb
Signed-off-by: Jiangjiang Shen <jiangjia@codeaurora.org>
1 file changed