percpu: eliminate two sparse warnings

Fix two cases where a __percpu pointer cast drops __percpu.
Signed-off-by: Lance Richardson <lrichard@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

arch/x86/include/asm/percpu.h

@@ -521,7 +521,8 @@ do {									\
 static __always_inline bool x86_this_cpu_constant_test_bit(unsigned int nr,
                         const unsigned long __percpu *addr)
 {
-	unsigned long __percpu *a = (unsigned long *)addr + nr / BITS_PER_LONG;
+	unsigned long __percpu *a =
+		(unsigned long __percpu *)addr + nr / BITS_PER_LONG;
 
 #ifdef CONFIG_X86_64
 	return ((1UL << (nr % BITS_PER_LONG)) & raw_cpu_read_8(*a)) != 0;
@@ -538,7 +539,7 @@ static inline bool x86_this_cpu_variable_test_bit(int nr,
 	asm volatile("bt "__percpu_arg(2)",%1\n\t"
 			CC_SET(c)
 			: CC_OUT(c) (oldbit)
-			: "m" (*(unsigned long *)addr), "Ir" (nr));
+			: "m" (*(unsigned long __percpu *)addr), "Ir" (nr));
 
 	return oldbit;
 }