Here is the most likely explanation and the actual interesting piece of history behind it. "Cambro" is almost certainly a misspelling of Kamboj (also spelled Kamboh, Kambhoja).
The were an ancient Indo-Iranian tribe mentioned in Sanskrit and Pali literature (like the Mahabharata and the Buddhist Jatakas). They lived in the region of modern-day Afghanistan, Tajikistan, and parts of northern Pakistan (the Hindu Kush). cambro worship india
It appears to be a typo or a misunderstanding of a very specific, niche historical and linguistic concept. There is no known deity, cult, or practice in India called "Cambro." Here is the most likely explanation and the