Squashed commit of the following: arch/arm: Rename include/stm32f0l0 and src/stm32f0l0 to stm32f0l0g0. Change all occurrences of lower-case stm32f0l0 to stm32f0l0g0. Change all occurrences of upper-case STM32F0L0 to STM32F0L0G0.