ARM: ux500: Drop U8540/9540 support

The U8540 was an evolved version of the U8500, but it was never
mass produced or put into products, only reference designs exist.
The upstream support was never completed and it is unlikely that
this will happen so drop the support for now to simplify
maintenance of the U8500.

Cc: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/mach-ux500/cpu-db8500.c

@@ -111,11 +111,6 @@ static void ux500_restart(enum reboot_mode mode, const char *cmd)
 	prcmu_system_reset(0);
 }
 
-static struct of_dev_auxdata u8540_auxdata_lookup[] __initdata = {
-	OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", NULL),
-	{},
-};
-
 static const struct of_device_id u8500_local_bus_nodes[] = {
 	/* only create devices below soc node */
 	{ .compatible = "stericsson,db8500", },
@@ -129,20 +124,13 @@ static void __init u8500_init_machine(void)
 	/* Initialize ux500 power domains */
 	ux500_pm_domains_init();
 
-	/* automatically probe child nodes of dbx5x0 devices */
-	if (of_machine_is_compatible("st-ericsson,u8540"))
-		of_platform_populate(NULL, u8500_local_bus_nodes,
-				     u8540_auxdata_lookup, NULL);
-	else
-		of_platform_populate(NULL, u8500_local_bus_nodes,
-				     NULL, NULL);
+	of_platform_populate(NULL, u8500_local_bus_nodes,
+			     NULL, NULL);
 }
 
 static const char * stericsson_dt_platform_compat[] = {
 	"st-ericsson,u8500",
-	"st-ericsson,u8540",
 	"st-ericsson,u9500",
-	"st-ericsson,u9540",
 	NULL,
 };