refactor(plat/nxp): each errata use a seperate source file

Don't mix erratas together in one file.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Change-Id: Ib1671011b91a41b0653210e4706d62b7e946c642
diff --git a/plat/nxp/common/soc_errata/errata_list.h b/plat/nxp/common/soc_errata/errata_list.h
new file mode 100644
index 0000000..74d2315
--- /dev/null
+++ b/plat/nxp/common/soc_errata/errata_list.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef ERRATA_LIST_H
+#define ERRATA_LIST_H
+
+#ifdef ERRATA_SOC_A050426
+void erratum_a050426(void);
+#endif
+
+#endif /* ERRATA_LIST_H */