[nrf fromtree] tests: drivers: flash: Enable negative_tests on nrf92 family

Add handling of the nrf92 chip family to a conditional statement.
The nrf92 family is similar to the nrf54h20 chip.

Signed-off-by: Sebastian Głąb <sebastian.glab@nordicsemi.no>
(cherry picked from commit 9702da9)

Author: nordic-segl

tests/drivers/flash/negative_tests/src/main.c

@@ -29,7 +29,7 @@
 #if defined(CONFIG_SOC_SERIES_NRF54L) || defined(CONFIG_SOC_FAMILY_MICROCHIP_SAM_D5X_E5X)
 #define TEST_FLASH_START (DT_REG_ADDR(DT_MEM_FROM_PARTITION(DT_NODELABEL(TEST_AREA))))
 #define TEST_FLASH_SIZE  (DT_REG_SIZE(DT_MEM_FROM_PARTITION(DT_NODELABEL(TEST_AREA))))
-#elif defined(CONFIG_SOC_NRF54H20)
+#elif defined(CONFIG_SOC_NRF54H20) || defined(CONFIG_SOC_SERIES_NRF92)
 #define TEST_FLASH_START (DT_REG_ADDR(DT_PARENT(DT_PARENT(DT_NODELABEL(TEST_AREA)))))
 #define TEST_FLASH_SIZE  (DT_REG_SIZE(DT_PARENT(DT_PARENT(DT_NODELABEL(TEST_AREA)))))
 #elif defined(CONFIG_SOC_FAMILY_INFINEON_PSOC4)