logger: Add the update kernel struct to userspace

Android's kernel logger can optionally return UID information
in addition to the previously returned information. This
information is available by telling the kernel to use the
updated structure via the newly introduced LOGGER_SET_VERSION
ioctl.

int fd = open("/dev/log/main", O_RDONLY);
int version = 2;
ioctl(fd, LOGGER_SET_VERSION, &version);

Change-Id: I3914be41de55342c2918f8978fcd4d2b96a09288