egt-launcher: update SRC_URI to point to github
egt-launcher: update SRC_URI to point to github

Signed-off-by: Cristian Birsan <0cb032615d2842358b4a8e1daa5f1b3e6f635525@microchip.com>

linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel