adbwait: Send a kill signal after timeout
adbwait: Send a kill signal after timeout

Change-Id: I96eda4030f2dfddef7fcc6048cbabce379667461
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools