Revert "qup_i2c: Initialize I2C resource before registering."

This reverts commit a2028d690cac9a362e7a4d9243b2aaf6eaf37653.
Revert "i2c_qup: Fix for unhandled IRQ"

This reverts commit 29b088efa8bbb5a4baad592e015e10b7ab9dd5b8.
Revert "qup_i2c: export qup_i2c_init_driver"

This reverts commit 06ad6e743657dbb069e9e524586b327222d23445.