irqchip/stm32mp-exti: Rename internal symbols

Rename all the internal symbols accordingly to the new name of the
driver.

Renaming done automatically through sed rules:
	s/stm32_exti_set_type/stm32mp_exti_convert_type/g
	s/stm32_exti_h_/stm32mp_exti_/g
	s/stm32_exti/stm32mp_exti/g
	s/stm32_bank/bank/g
	s/stm32_/stm32mp_/g
	s/STM32_/STM32MP_/g
	s/STM32MP1_/STM32MP_/g
	s/stm32mp1_exti_/stm32mp_exti_/g
	s/stm32-exti-h/stm32mp-exti/g

Manually fix some indentation after the rename.

[ tglx: Mop up more coding style issues while at it ]

Signed-off-by: Antonio Borneo <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: AntonioBorneo