x86/pci: Return true/false (not 1/0) from bool functions

Return boolean values ("true" or "false") instead of 1 or 0 from bool
functions.  This fixes the following warnings from coccicheck:

  ./arch/x86/pci/mmconfig-shared.c:464:9-10: WARNING: return of 0/1 in function 'is_mmconf_reserved' with return type bool
  ./arch/x86/pci/mmconfig-shared.c:493:5-6: WARNING: return of 0/1 in function 'is_mmconf_reserved' with return type bool
  ./arch/x86/pci/mmconfig-shared.c:501:9-10: WARNING: return of 0/1 in function 'is_mmconf_reserved' with return type bool
  ./arch/x86/pci/mmconfig-shared.c:522:5-6: WARNING: return of 0/1 in function 'is_mmconf_reserved' with return type bool

Link: https://lore.kernel.org/r/1615794000-102771-1-git-send-email-yang.lee@linux.alibaba.comReported-by: NAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: NYang Li <yang.lee@linux.alibaba.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NKrzysztof Wilczyński <kw@linux.com>

arch/x86/pci/mmconfig-shared.c

@@ -461,7 +461,7 @@ static bool __ref is_mmconf_reserved(check_reserved_t is_reserved,
 	}
 
 	if (size < (16UL<<20) && size != old_size)
-		return 0;
+		return false;
 
 	if (dev)
 		dev_info(dev, "MMCONFIG at %pR reserved in %s\n",
@@ -493,7 +493,7 @@ static bool __ref is_mmconf_reserved(check_reserved_t is_reserved,
 				&cfg->res, (unsigned long) cfg->address);
 	}
 
-	return 1;
+	return true;
 }
 
 static bool __ref
@@ -501,7 +501,7 @@ pci_mmcfg_check_reserved(struct device *dev, struct pci_mmcfg_region *cfg, int e
 {
 	if (!early && !acpi_disabled) {
 		if (is_mmconf_reserved(is_acpi_reserved, cfg, dev, 0))
-			return 1;
+			return true;
 
 		if (dev)
 			dev_info(dev, FW_INFO
@@ -522,14 +522,14 @@ pci_mmcfg_check_reserved(struct device *dev, struct pci_mmcfg_region *cfg, int e
 	 * _CBA method, just assume it's reserved.
 	 */
 	if (pci_mmcfg_running_state)
-		return 1;
+		return true;
 
 	/* Don't try to do this check unless configuration
 	   type 1 is available. how about type 2 ?*/
 	if (raw_pci_ops)
 		return is_mmconf_reserved(e820__mapped_all, cfg, dev, 1);
 
-	return 0;
+	return false;
 }
 
 static void __init pci_mmcfg_reject_broken(int early)