ext: hal: altera: Add altera HAL sources in Zephyr

Add the Altera HAL sources from Altera Quartus Lite SDK
to Zephyr OS under 'ext/hal/altera' folder.

Origin: Altera Quartus Prime Lite SDK
URL: http://dl.altera.com/?edition=lite


Version: v17.0
Purpose: Provides HAL support to Altera's soft IP's
Maintained-by: External

Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>