sm6250-common: Initial variant handler libinit

* This libinit has been made to commonize device variants props handling

[dereference23: Adapt for Xiaomi SM6250]
Signed-off-by: Alexander Winkowski <dereference23@outlook.com>
Change-Id: Iab68ff451ab1d6e861fb4cda4ef07fad3123ecde

libinit/include/libinit_variant.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2021 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef LIBINIT_VARIANT_H
+#define LIBINIT_VARIANT_H
+
+#include <string>
+#include <vector>
+
+typedef struct variant_info {
+    std::string hwc_value;
+
+    std::string brand;
+    std::string device;
+    std::string model;
+    std::string build_description;
+    std::string build_fingerprint;
+
+    bool nfc;
+} variant_info_t;
+
+void search_variant(const std::vector<variant_info_t> variants);
+
+void set_variant_props(const variant_info_t variant);
+
+#endif // LIBINIT_VARIANT_H