[nrf fromlist] tests: drivers: uart: remove TIMER config symbols

Remove TIMER config symbols to align to changes in nrfx driver.

Upstream PR #: 96858

Signed-off-by: Michał Bainczyk <[email protected]>

Author: mib1-nordic

tests/drivers/uart/uart_mix_fifo_poll/testcase.yaml

@@ -79,7 +79,7 @@ tests:
       - CONFIG_UART_0_ENHANCED_POLL_OUT=y
       - CONFIG_UART_0_NRF_HW_ASYNC=y
       - CONFIG_UART_0_NRF_HW_ASYNC_TIMER=2
-      - CONFIG_NRFX_TIMER2=y
+      - CONFIG_NRFX_TIMER=y
     platform_allow:
       - nrf52840dk/nrf52840
       - nrf5340dk/nrf5340/cpuapp

tests/drivers/uart/uart_pm/testcase.yaml

@@ -78,7 +78,7 @@ tests:
       - CONFIG_UART_0_ASYNC=y
       - CONFIG_UART_0_NRF_HW_ASYNC=y
       - CONFIG_UART_0_NRF_HW_ASYNC_TIMER=2
-      - CONFIG_NRFX_TIMER2=y
+      - CONFIG_NRFX_TIMER=y
       - CONFIG_UART_0_ENHANCED_POLL_OUT=n
 
   drivers.uart.pm.async.enhanced_poll:
@@ -88,7 +88,7 @@ tests:
       - CONFIG_UART_0_ASYNC=y
       - CONFIG_UART_0_NRF_HW_ASYNC=y
       - CONFIG_UART_0_NRF_HW_ASYNC_TIMER=2
-      - CONFIG_NRFX_TIMER2=y
+      - CONFIG_NRFX_TIMER=y
       - CONFIG_UART_0_ENHANCED_POLL_OUT=y
     platform_exclude:
       - nrf54h20dk/nrf54h20/cpuapp