drivers: serial: uart_altera_jtag: Fix wrong register address used
drivers: serial: uart_altera_jtag: Fix wrong register address used

Fix wrong control register address used in uart_altera_jtag_init
function which caused memory corruption.

Signed-off-by: Khor Swee Aun <942a70820d7763d9262cc2c274bd13df48587fd7@intel.com>

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