lib/oe/package_manager.py: turn nativesdk postinst warnings into notes

The warnings deal with two specific cases of failure:
1) unable to execute nativesdk postinsts for mingw SDKs because
they need to be run under wine
2) unable to execute target postinsts when there is no qemu
usermode support for the target

Neither of these should be a big problem as mingw issue was never
found to problematic, and target postinsts deal with things that
are needed at runtime and not at build time which is the purpose
of SDKs.

The specific reason to do this is to reduce the amount of warnings
shown by the Yocto autobuilder, to zero eventually.

(From OE-Core rev: cbc32fcd9b52e750600cce9dd84b33e3ce612eae)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oe/package_manager.py

@@ -440,7 +440,7 @@ class PackageManager(object, metaclass=ABCMeta):
                 continue
 
             if populate_sdk == 'host' and self.d.getVar('SDK_OS') == 'mingw32':
-                bb.warn("The postinstall intercept hook '%s' could not be executed due to missing wine support, details in %s/log.do_%s"
+                bb.note("The postinstall intercept hook '%s' could not be executed due to missing wine support, details in %s/log.do_%s"
                                 % (script, self.d.getVar('T'), self.d.getVar('BB_CURRENTTASK')))
                 continue
 
@@ -455,7 +455,7 @@ class PackageManager(object, metaclass=ABCMeta):
                     bb.fatal("The postinstall intercept hook '%s' failed, details in %s/log.do_%s" % (script, self.d.getVar('T'), self.d.getVar('BB_CURRENTTASK')))
                 elif populate_sdk == 'target':
                     if "qemuwrapper: qemu usermode is not supported" in e.output.decode("utf-8"):
-                        bb.warn("The postinstall intercept hook '%s' could not be executed due to missing qemu usermode support, details in %s/log.do_%s"
+                        bb.note("The postinstall intercept hook '%s' could not be executed due to missing qemu usermode support, details in %s/log.do_%s"
                                 % (script, self.d.getVar('T'), self.d.getVar('BB_CURRENTTASK')))
                     else:
                         bb.fatal("The postinstall intercept hook '%s' failed, details in %s/log.do_%s" % (script, self.d.getVar('T'), self.d.getVar('BB_CURRENTTASK')))