Fix 'sdir list' command
Fix 'sdir list' command

When loading 'sdir' from read-only partition, the list command fails.
Ensure that the sdir binary has the correct SMACK64EXEC label set at
build time.

Resolves: LE-12156
Change-Id: I7d09d6265d48eba1986b3b959169e15615d4020b

legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af