drivers: serial: Add in UART for ADI SC5XX-family processors

Co-developed-by: Greg Malysa <greg.malysa@timesys.com>
Signed-off-by: Greg Malysa <greg.malysa@timesys.com>
Co-developed-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Vasileios Bimpikas <vasileios.bimpikas@analog.com>
Signed-off-by: Utsav Agarwal <utsav.agarwal@analog.com>
Signed-off-by: Arturs Artamonovs <arturs.artamonovs@analog.com>
Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 403ab1d..dbe598b 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -65,3 +65,4 @@
 ifndef CONFIG_SPL_BUILD
 obj-$(CONFIG_USB_TTY) += usbtty.o
 endif
+obj-$(CONFIG_UART4_SERIAL) += serial_adi_uart4.o