[nrf fromtree] tests: drivers: spi: spi_controller_peripheral: Move test overlays

Overlay files that modify test configuration shall be stored
in the main application directory.
There is no board with f.e. '1mhz' name.

Move test overlays from boards sub-direcotry to the main
application directory.

Signed-off-by: Sebastian Głąb <[email protected]>
(cherry picked from commit c359c44)

Author: nordic-segl

…ler_peripheral/boards/1m333333hz.overlay …controller_peripheral/1m333333hz.overlaytests/drivers/spi/spi_controller_peripheral/boards/1m333333hz.overlay renamed to tests/drivers/spi/spi_controller_peripheral/1m333333hz.overlay tests/drivers/spi/spi_controller_peripheral/boards/1m333333hz.overlay renamed to tests/drivers/spi/spi_controller_peripheral/1m333333hz.overlay

@@ -20,58 +20,58 @@ tests:
   drivers.spi.spi_mode0:
     extra_configs:
       - CONFIG_TESTED_SPI_MODE=0
-    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/250khz.overlay"
+    extra_args: EXTRA_DTC_OVERLAY_FILE="250khz.overlay"
     integration_platforms:
       - nrf52840dk/nrf52840
 
   drivers.spi.spi_mode1:
     extra_configs:
       - CONFIG_TESTED_SPI_MODE=1
-    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/500khz.overlay"
+    extra_args: EXTRA_DTC_OVERLAY_FILE="500khz.overlay"
     integration_platforms:
       - nrf52840dk/nrf52840
 
   drivers.spi.spi_mode2:
     extra_configs:
       - CONFIG_TESTED_SPI_MODE=2
-    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/1mhz.overlay"
+    extra_args: EXTRA_DTC_OVERLAY_FILE="1mhz.overlay"
     integration_platforms:
       - nrf52840dk/nrf52840
 
   drivers.spi.spi_mode3:
     extra_configs:
       - CONFIG_TESTED_SPI_MODE=3
-    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/2mhz.overlay"
+    extra_args: EXTRA_DTC_OVERLAY_FILE="2mhz.overlay"
     integration_platforms:
       - nrf52840dk/nrf52840
 
   drivers.spi.spi_1M333333Hz:
     extra_configs:
       - CONFIG_TESTED_SPI_MODE=0
-    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/1m333333hz.overlay"
+    extra_args: EXTRA_DTC_OVERLAY_FILE="1m333333hz.overlay"
     integration_platforms:
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54h20dk/nrf54h20/cpuapp
 
   drivers.spi.spi_2M666666Hz:
     extra_configs:
       - CONFIG_TESTED_SPI_MODE=0
-    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/2m666666hz.overlay"
+    extra_args: EXTRA_DTC_OVERLAY_FILE="2m666666hz.overlay"
     integration_platforms:
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54h20dk/nrf54h20/cpuapp
 
   drivers.spi.spi_4MHz:
     extra_configs:
       - CONFIG_TESTED_SPI_MODE=2
-    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/4mhz.overlay"
+    extra_args: EXTRA_DTC_OVERLAY_FILE="4mhz.overlay"
     integration_platforms:
       - nrf52840dk/nrf52840
 
   drivers.spi.spi_8MHz:
     extra_configs:
       - CONFIG_TESTED_SPI_MODE=1
-    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/8mhz.overlay"
+    extra_args: EXTRA_DTC_OVERLAY_FILE="8mhz.overlay"
     integration_platforms:
       - nrf52840dk/nrf52840