SystemUI: Show charging status in addition to trust granted/transient status
If the device is kept unlocked, it displays 'Kept unlocked by TrustAgent' and will not show charging state. This adds the charging state below the unlocked message Test: m, atest KeyguardIndicationControllerTest, check keyguard Change-Id: I6b3515167c990c27fa89b3742d72db98657768b0
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