Switch kernel header parsing to python libclang

Replace the tokenizer in cpp.py with libclang.

Bug: 18937958
Change-Id: I27630904c6d2849418cd5ca3d3c612ec3078686d
diff --git a/libc/kernel/uapi/linux/hidraw.h b/libc/kernel/uapi/linux/hidraw.h
index 0ffacea..7d60d0d 100644
--- a/libc/kernel/uapi/linux/hidraw.h
+++ b/libc/kernel/uapi/linux/hidraw.h
@@ -22,14 +22,14 @@
 #include <linux/types.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct hidraw_report_descriptor {
- __u32 size;
- __u8 value[HID_MAX_DESCRIPTOR_SIZE];
+  __u32 size;
+  __u8 value[HID_MAX_DESCRIPTOR_SIZE];
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct hidraw_devinfo {
- __u32 bustype;
- __s16 vendor;
- __s16 product;
+  __u32 bustype;
+  __s16 vendor;
+  __s16 product;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 #define HIDIOCGRDESCSIZE _IOR('H', 0x01, int)
@@ -38,8 +38,8 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define HIDIOCGRAWNAME(len) _IOC(_IOC_READ, 'H', 0x04, len)
 #define HIDIOCGRAWPHYS(len) _IOC(_IOC_READ, 'H', 0x05, len)
-#define HIDIOCSFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len)
-#define HIDIOCGFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len)
+#define HIDIOCSFEATURE(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x06, len)
+#define HIDIOCGFEATURE(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x07, len)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define HIDRAW_FIRST_MINOR 0
 #define HIDRAW_MAX_DEVICES 64