ARC: timer: gfrc, rtc: build under same option (64-bit timers)

The original distinction was done as they were developed at different
times and primarily because they are specific to UP (RTC) and SMP (GFRC).

But given that driver handles that at runtime, (i.e. not allowing
RTC as clocksource in SMP), we can simplify things a bit.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/setup.c

@@ -234,11 +234,11 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
 		       is_isa_arcompact() ? "ARCompact" : "ARCv2",
 		       IS_AVAIL1(cpu->isa.be, "[Big-Endian]"));
 
-	n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
+	n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s%s%s\nISA Extn\t: ",
 		       IS_AVAIL1(cpu->extn.timer0, "Timer0 "),
 		       IS_AVAIL1(cpu->extn.timer1, "Timer1 "),
-		       IS_AVAIL2(cpu->extn.rtc, "Local-64-bit-Ctr ",
-				 CONFIG_ARC_HAS_RTC));
+		       IS_AVAIL2(cpu->extn.rtc, "RTC [UP 64-bit] ", CONFIG_ARC_TIMERS_64BIT),
+		       IS_AVAIL2(cpu->extn.gfrc, "GFRC [SMP 64-bit] ", CONFIG_ARC_TIMERS_64BIT));
 
 	n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s",
 			   IS_AVAIL2(cpu->isa.atomic, "atomic ", CONFIG_ARC_HAS_LLSC),

arch/arc/kernel/time.c

@@ -81,7 +81,7 @@ static int noinline arc_get_timer_clk(struct device_node *node)
 
 /********** Clock Source Device *********/
 
-#ifdef CONFIG_ARC_HAS_GFRC
+#ifdef CONFIG_ARC_TIMERS_64BIT
 
 static cycle_t arc_read_gfrc(struct clocksource *cs)
 {
@@ -128,10 +128,6 @@ static int __init arc_cs_setup_gfrc(struct device_node *node)
 }
 CLOCKSOURCE_OF_DECLARE(arc_gfrc, "snps,archs-timer-gfrc", arc_cs_setup_gfrc);
 
-#endif
-
-#ifdef CONFIG_ARC_HAS_RTC
-
 #define AUX_RTC_CTRL	0x103
 #define AUX_RTC_LOW	0x104
 #define AUX_RTC_HIGH	0x105