HACK: android: Report IPA signature is always valid

Without gnutls libcamera will always require proxy service for IPA.
Building within Android using meson.build has a problem with producing
executables, therefore disable check to allow dlopen() IPA instead.

Suggested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Change-Id: Ia1262cc7198ca196860b5f6526b55c8071b07f1f
Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>

src/libcamera/ipa_manager.cpp

@@ -311,9 +311,9 @@ bool IPAManager::isSignatureValid([[maybe_unused]] IPAModule *ipa) const
 		<< "IPA module " << ipa->path() << " signature is "
 		<< (valid ? "valid" : "not valid");
 
-	return valid;
+	return true;
 #else
-	return false;
+	return true;
 #endif
 }