MIPS: kernel: cpu-bugs64: Do not check R6 cores for existing 64-bit bugs

The current HW bugs checked in cpu-bugs64, do not apply to R6 cores
and they cause compilation problems due to removed <R6 instructions,
so do not check for them for the time being.
Reviewed-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

arch/mips/kernel/cpu-bugs64.c

@@ -244,7 +244,7 @@ static inline void check_daddi(void)
 	panic(bug64hit, !DADDI_WAR ? daddiwar : nowar);
 }
 
-int daddiu_bug	= -1;
+int daddiu_bug	= config_enabled(CONFIG_CPU_MIPSR6) ? 0 : -1;
 
 static inline void check_daddiu(void)
 {
@@ -314,11 +314,14 @@ static inline void check_daddiu(void)
 
 void __init check_bugs64_early(void)
 {
-	check_mult_sh();
-	check_daddiu();
+	if (!config_enabled(CONFIG_CPU_MIPSR6)) {
+		check_mult_sh();
+		check_daddiu();
+	}
 }
 
 void __init check_bugs64(void)
 {
-	check_daddi();
+	if (!config_enabled(CONFIG_CPU_MIPSR6))
+		check_daddi();
 }