tests: llext-edk: increase test timeout

The llext-edk test case is timing out on some workloads, so increase the
timeout to 120 seconds to accommodate longer execution times.

Signed-off-by: Luca Burelli <[email protected]>

Author: pillo79

tests/misc/llext-edk/testcase.yaml

@@ -7,3 +7,4 @@ tests:
     platform_allow:
       - qemu_cortex_r5
     toolchain_exclude: llvm
+    timeout: 120 # See #85662