drivers: char: Enable OMAP UART driver for TI K3 devices

TI K3 devices (J721E, J721S2, AM62X .etc) have the same variant
of UART as OMAP4. Add the compatible used in Linux device tree,
"ti,am654-uart" to the OMAP UART dt_match so that the driver can
be used with these devices. Also, enable the driver for ARM64
platforms.

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Reviewed-by: Michal Orzel <michal.orzel@amd.com>

xen/drivers/char/Kconfig

@@ -55,7 +55,7 @@ config HAS_EXYNOS4210
 config HAS_OMAP
 	bool "Texas Instruments OMAP UART driver"
 	default y
-	depends on ARM_32
+	depends on ARM
 	help
 	  This selects the Texas Instruments OMAP UART. If you have a Texas
 	  Instruments based CPU, say Y.

xen/drivers/char/omap-uart.c

@@ -372,6 +372,7 @@ static int __init omap_uart_init(struct dt_device_node *dev,
 static const struct dt_device_match omap_uart_dt_match[] __initconst =
 {
     DT_MATCH_COMPATIBLE("ti,omap4-uart"),
+    DT_MATCH_COMPATIBLE("ti,am654-uart"),
     { /* sentinel */ },
 };