Update to v5.5 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.5

Test: Boots on walleye.
Test: Ran bionic-unit-tests on walleye.
Test: Boots on cuttlefish.
Test: Ran bionic-unit-tests on cuttlefish.
Change-Id: I57387d3c31e0ba5ad125ffe291cecf365c7b374e
Merged-In: I57387d3c31e0ba5ad125ffe291cecf365c7b374e
diff --git a/libc/kernel/uapi/asm-x86/asm/bootparam.h b/libc/kernel/uapi/asm-x86/asm/bootparam.h
index af66fdb..7401135 100644
--- a/libc/kernel/uapi/asm-x86/asm/bootparam.h
+++ b/libc/kernel/uapi/asm-x86/asm/bootparam.h
@@ -25,6 +25,8 @@
 #define SETUP_EFI 4
 #define SETUP_APPLE_PROPERTIES 5
 #define SETUP_JAILHOUSE 6
+#define SETUP_INDIRECT (1 << 31)
+#define SETUP_TYPE_MAX (SETUP_INDIRECT | SETUP_JAILHOUSE)
 #define RAMDISK_IMAGE_START_MASK 0x07FF
 #define RAMDISK_PROMPT_FLAG 0x8000
 #define RAMDISK_LOAD_FLAG 0x4000
@@ -53,6 +55,12 @@
   __u32 len;
   __u8 data[0];
 };
+struct setup_indirect {
+  __u32 type;
+  __u32 reserved;
+  __u64 len;
+  __u64 addr;
+};
 struct setup_header {
   __u8 setup_sects;
   __u16 root_flags;
@@ -92,6 +100,7 @@
   __u64 pref_address;
   __u32 init_size;
   __u32 handover_offset;
+  __u32 kernel_info_offset;
 } __attribute__((packed));
 struct sys_desc_table {
   __u16 length;
@@ -121,15 +130,22 @@
 } __attribute__((packed));
 #define JAILHOUSE_SETUP_REQUIRED_VERSION 1
 struct jailhouse_setup_data {
-  __u16 version;
-  __u16 compatible_version;
-  __u16 pm_timer_address;
-  __u16 num_cpus;
-  __u64 pci_mmconfig_base;
-  __u32 tsc_khz;
-  __u32 apic_khz;
-  __u8 standard_ioapic;
-  __u8 cpu_ids[255];
+  struct {
+    __u16 version;
+    __u16 compatible_version;
+  } __attribute__((packed)) hdr;
+  struct {
+    __u16 pm_timer_address;
+    __u16 num_cpus;
+    __u64 pci_mmconfig_base;
+    __u32 tsc_khz;
+    __u32 apic_khz;
+    __u8 standard_ioapic;
+    __u8 cpu_ids[255];
+  } __attribute__((packed)) v1;
+  struct {
+    __u32 flags;
+  } __attribute__((packed)) v2;
 } __attribute__((packed));
 struct boot_params {
   struct screen_info screen_info;