adbu: Properly handle ps available modes
adbu: Properly handle ps available modes

Change-Id: I26fee780545d8e387975facc8395a05091d5ef0d
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools