Fix typo in build file of lighting-app EFR32 (#5615)
Fix typo in build file of lighting-app EFR32 (#5615)

Fix typo which breaks the RPC EFR32 lighting app build.
nestlabs/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip