base: Unpack .7z files with p7zip

(From OE-Core rev: b129a45288ce465888b609e463cf94538de22a3c)

Signed-off-by: Daniel Ammann <daniel.ammann@bytesatwork.ch>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes-global/base.bbclass

@@ -674,6 +674,10 @@ python () {
         elif path.endswith('.deb'):
             d.appendVarFlag('do_unpack', 'depends', ' xz-native:do_populate_sysroot')
 
+        # *.7z should DEPEND on p7zip-native for unpacking
+        elif path.endswith('.7z'):
+            d.appendVarFlag('do_unpack', 'depends', ' p7zip-native:do_populate_sysroot')
+
     set_packagetriplet(d)
 
     # 'multimachine' handling