powerpc/xics: Change *_xirr_info_set() prototype to avoid casts

The xirr is 32 bits in hardware, but the hypervisor requries the upper
bits of the register to be clear on the hcall.  By changing the type
from signed to unsigned int we can drop masking it back to 32 bits.
Signed-off-by: NMilton Miller <miltonm@bga.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/platforms/pseries/xics.c

@@ -87,7 +87,7 @@ static inline unsigned int direct_xirr_info_get(void)
 	return in_be32(&xics_per_cpu[cpu]->xirr.word);
 }
 
-static inline void direct_xirr_info_set(int value)
+static inline void direct_xirr_info_set(unsigned int value)
 {
 	int cpu = smp_processor_id();
 
@@ -120,15 +120,14 @@ static inline unsigned int lpar_xirr_info_get(void)
 	return (unsigned int)return_value;
 }
 
-static inline void lpar_xirr_info_set(int value)
+static inline void lpar_xirr_info_set(unsigned int value)
 {
 	unsigned long lpar_rc;
-	unsigned long val64 = value & 0xffffffff;
 
-	lpar_rc = plpar_eoi(val64);
+	lpar_rc = plpar_eoi(value);
 	if (lpar_rc != H_SUCCESS)
-		panic("bad return code EOI - rc = %ld, value=%lx\n", lpar_rc,
-		      val64);
+		panic("bad return code EOI - rc = %ld, value=%x\n", lpar_rc,
+		      value);
 }
 
 static inline void lpar_cppr_info(u8 value)