boards: x86: Indicate smp support for ADL and EHL boards

Indicate SMP support to be able to run related tests on the boards.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
diff --git a/boards/x86/intel_adl/intel_adl_crb.yaml b/boards/x86/intel_adl/intel_adl_crb.yaml
index 5881030..a49e086 100644
--- a/boards/x86/intel_adl/intel_adl_crb.yaml
+++ b/boards/x86/intel_adl/intel_adl_crb.yaml
@@ -12,6 +12,7 @@
   - rtc
   - i2c
   - spi
+  - smp
 testing:
   timeout_multiplier: 4
   ignore_tags:
diff --git a/boards/x86/intel_adl/intel_adl_rvp.yaml b/boards/x86/intel_adl/intel_adl_rvp.yaml
index a93e5ee..ce009bf 100644
--- a/boards/x86/intel_adl/intel_adl_rvp.yaml
+++ b/boards/x86/intel_adl/intel_adl_rvp.yaml
@@ -6,6 +6,7 @@
   - zephyr
 ram: 2048
 supported:
+  - smp
   - watchdog
 testing:
   timeout_multiplier: 4
diff --git a/boards/x86/intel_ehl/intel_ehl_crb.yaml b/boards/x86/intel_ehl/intel_ehl_crb.yaml
index 7b0cdde..4e9d07e 100644
--- a/boards/x86/intel_ehl/intel_ehl_crb.yaml
+++ b/boards/x86/intel_ehl/intel_ehl_crb.yaml
@@ -9,6 +9,7 @@
 supported:
   - gpio
   - smbus
+  - smp
   - rtc
   - watchdog
 testing: