samples: Fix Certification fail related to PI/PH

If PI (Pairing Instruction) is present then PH (Pairing Hint)
must have at least one of bits [4, 8, 9, 10, 11, 12, 15, 16, 17,
18, 19, 20, 21, 22] present. The issue was that
CHIP_DEVICE_CONFIG_PAIRING_SECONDARY_HINT was not set for
the certification firmware alongside to
CHIP_DEVICE_CONFIG_PAIRING_SECONDARY_INSTRUCTION.

Signed-off-by: Arkadiusz Balys <arkadiusz.balys@nordicsemi.no>

Author: ArekBalysNordic

subsys/certification/chip_project_config.h

@@ -34,3 +34,6 @@
 #define CHIP_DEVICE_CONFIG_DEVICE_NAME "Nordic Platform"
 #define CHIP_DEVICE_CONFIG_PAIRING_INITIAL_INSTRUCTION "Reset device"
 #define CHIP_DEVICE_CONFIG_PAIRING_SECONDARY_INSTRUCTION "Visit Controller App"
+#define CHIP_DEVICE_CONFIG_PAIRING_SECONDARY_HINT                                                                      \
+	((1 << CHIP_COMMISSIONING_HINT_INDEX_CUSTOM_INSTRUCTION) |                                                     \
+	 (1 << CHIP_COMMISSIONING_HINT_INDEX_SEE_ADMINISTRATOR_UX) | (1 << CHIP_COMMISSIONING_HINT_INDEX_SEE_MANUAL))