MIPS: r4k-bugs64: Drop CONFIG_CPU_MIPSR6 checks

The r4k-bugs64 code will no longer be built for MIPSr6 kernel
configurations, so there's no need to perform checks for MIPSr6 within
the code. Drop those redundant checks.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org

arch/mips/kernel/r4k-bugs64.c

@@ -242,7 +242,7 @@ static __init void check_daddi(void)
 	panic(bug64hit, !DADDI_WAR ? daddiwar : nowar);
 }
 
-int daddiu_bug	= IS_ENABLED(CONFIG_CPU_MIPSR6) ? 0 : -1;
+int daddiu_bug	= -1;
 
 static __init void check_daddiu(void)
 {
@@ -312,14 +312,11 @@ static __init void check_daddiu(void)
 
 void __init check_bugs64_early(void)
 {
-	if (!IS_ENABLED(CONFIG_CPU_MIPSR6)) {
-		check_mult_sh();
-		check_daddiu();
-	}
+	check_mult_sh();
+	check_daddiu();
 }
 
 void __init check_bugs64(void)
 {
-	if (!IS_ENABLED(CONFIG_CPU_MIPSR6))
-		check_daddi();
+	check_daddi();
 }