How to add a non IOS phone to my device list

See View and remove your associated devices in iTunes - Apple Support. An Android device running Apple Music would likely become associated with your account. That said there are no particular advantages to having an device or computer associated with your account. The mechanism is there to enforce limitations on the number of devices that can use your protected content.

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Do you mean the Device List that is showing in iCloud.com under Settings and on your Apple ID page? If so, then no you cannot. The only devices/computers that show up on that list are devices that are running iOS 8 or higher, Apple Watches that are running watchOS 1 or higher, or computers that are running OSx Yosemite or higher. Even my iPad 1 and iPhone 4 won't show up on that list.

Cheers,

GB