samples: enable support for nrf54l15dk/nrf54l15/cpuflpr

Due to memory constraints, only samples built in release
configuration can be enabled.

Signed-off-by: Marcin Szymczyk <[email protected]>

Author: masz-nordic

samples/async-philosophers/sample.yaml

@@ -16,6 +16,7 @@ common:
     - qemu_riscv64
     - nrf52840dk/nrf52840
     - nrf54l15dk/nrf54l15/cpuapp
+    - nrf54l15dk/nrf54l15/cpuflpr
 tests:
   sample.rust.work-philosopher:
     tags: introduction

samples/hello_world/sample.yaml

@@ -16,6 +16,7 @@ common:
     - qemu_riscv64
     - nrf52840dk/nrf52840
     - nrf54l15dk/nrf54l15/cpuapp
+    - nrf54l15dk/nrf54l15/cpuflpr
 tests:
   sample.rust.helloworld:
     tags: introduction