mempool: Add AHB1 memory pool declaration
mempool: Add mempool declaration for stm32f429i
platform: Add LCD initialization functions for stm32f429i
platform: Add LCD utilization functions for stm32f429i
platform: Add stm32f429i lcd test case
platform: Add touch screen initialization functions for stm32f429i
config: Add platform default config for each board
travis: Travis now will check discoveryf4 and discoveryf429 build