ARC: merge HAPS-HS with nSIM-HS configs

Starting from nSIM 2019.06 is possible to use DW UART
instead of ARC UART. That allows us to merge
"nsim_hs" with "haps_hs" and "nsim_hs_smp" with "haps_hs_smp"
with minor changes which were done in previous commits.

We eliminate nsim_hs_defconfig and nsim_hs_smp_defconfig
and leave haps_hs_defconfig and haps_hs_smp_defconfig
which can be used on HAPS / nSIM / ZEBU / QEMU platforms
without additional changes in Linux kernel.

For nSIM we should now use UART property values
"-prop=nsim_mem-dev=uart0,kind=dwuart,base=0xf0000000"
instead of previously used
"-prop=nsim_mem-dev=uart0,base=0xc0fc1000"
"use_connect" and "irq" values of UART property remains untouched.

Signed-off-by: Eugeniy Paltsev <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

Author: Eugeniy Paltsev

arch/arc/Makefile

@@ -3,7 +3,7 @@
 # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 #
 
-KBUILD_DEFCONFIG := nsim_hs_defconfig
+KBUILD_DEFCONFIG := haps_hs_smp_defconfig
 
 ifeq ($(CROSS_COMPILE),)
 CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-)

arch/arc/boot/dts/nsim_hs.dts

@@ -21,7 +21,6 @@ static const char *simulation_compat[] __initconst = {
 	"snps,nsim",
 	"snps,nsimosci",
 #else
-	"snps,nsim_hs",
 	"snps,nsimosci_hs",
 	"snps,zebu_hs",
 #endif