tests: drivers: display: add support for rtk7eka6m3b00001bu shield

add build support for display_read_write on rtk7eka6m3b00001bu shield

Signed-off-by: The Nguyen <the.nguyen.yf@renesas.com>

Author: thenguyenyf

boards/renesas/ek_ra8d1/ek_ra8d1.yaml

@@ -12,4 +12,5 @@ supported:
   - uart
   - watchdog
   - usbd
+  - display
 vendor: renesas

tests/drivers/display/display_read_write/testcase.yaml

@@ -69,10 +69,10 @@ tests:
     # presence of the arduino_spi DT nodelabel
     platform_allow:
       - mimxrt685_evk/mimxrt685s/cm33
-  drivers.display.read_write.rtkmipilcdb00000be:
+  drivers.display.read_write.renesas_ra_glcdc:
     tags:
       - shield
+    filter: dt_compat_enabled("renesas,ra-glcdc")
     extra_args:
-      - SHIELD=rtkmipilcdb00000be
-    platform_allow:
-      - ek_ra8d1
+      - platform:ek_ra8d1/r7fa8d1bhecbd:SHIELD=rtkmipilcdb00000be
+      - platform:ek_ra8d1/r7fa8d1bhecbd:SHIELD=rtk7eka6m3b00001bu