[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/arch/arm/mach-s3c64xx/irq-uart.h b/src/kernel/linux/v4.19/arch/arm/mach-s3c64xx/irq-uart.h
new file mode 100644
index 0000000..78eccdc
--- /dev/null
+++ b/src/kernel/linux/v4.19/arch/arm/mach-s3c64xx/irq-uart.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2010 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * Header file for Samsung SoC UART IRQ demux for S3C64XX and later
+ */
+
+struct s3c_uart_irq {
+	void __iomem	*regs;
+	unsigned int	 base_irq;
+	unsigned int	 parent_irq;
+};
+
+extern void s3c_init_uart_irqs(struct s3c_uart_irq *irq, unsigned int nr_irqs);
+