scripts: kconfig: Add unit divisor to dt_node_int_prop_int/hex functions
scripts: kconfig: Add unit divisor to dt_node_int_prop_int/hex functions

Added a unit divisor option to the dt_node_int_prop_int and
dt_node_int_prop_hex functions to allow retrieval of DTS items as
a size value of K, M, or G divisor similar to the dt_node_reg_size_int
function.

Signed-off-by: David Leach <98707a1e43c521c5b5b81e36afef696dde6831a3@nxp.com>

finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr