goldfish: logcat -Q in logd domain

# goldfish-logcat service:  runs logcat -Q

type goldfish_logcat, domain;

# goldfish-logcat service:  runs logcat -Q in logd domain

domain_auto_trans(init, logcat_exec, goldfish_logcat)

domain_auto_trans(init, logcat_exec, logd)

# Read from logd.

read_logd(goldfish_logcat)

read_logd(logd)

# Write to /dev/ttyS2 and /dev/ttyGF2.

allow goldfish_logcat serial_device:chr_file { write open };

allow logd serial_device:chr_file { write open };