tests: psa: Allow more time between watchdog resets in qemu
tests: psa: Allow more time between watchdog resets in qemu

mps2_an521 and mps3_an547 need yet more time with TFM 1.6 to pass their
tests. This change was recomended by RajKumar Kanagaraj. Thanks!

Signed-off-by: Jimmy Brisson <de33656aa60791325e53378be66c520c3736548a@linaro.org>

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