Update to v5.16 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.16

Test: Builds and bionic unit tests pass.
Change-Id: I2522c4f2a0efb9f8a193e1f2d65868e478217502
diff --git a/libc/kernel/uapi/linux/pci_regs.h b/libc/kernel/uapi/linux/pci_regs.h
index 81450a7..5920633 100644
--- a/libc/kernel/uapi/linux/pci_regs.h
+++ b/libc/kernel/uapi/linux/pci_regs.h
@@ -413,6 +413,12 @@
 #define PCI_EXP_DEVCTL_URRE 0x0008
 #define PCI_EXP_DEVCTL_RELAX_EN 0x0010
 #define PCI_EXP_DEVCTL_PAYLOAD 0x00e0
+#define PCI_EXP_DEVCTL_PAYLOAD_128B 0x0000
+#define PCI_EXP_DEVCTL_PAYLOAD_256B 0x0020
+#define PCI_EXP_DEVCTL_PAYLOAD_512B 0x0040
+#define PCI_EXP_DEVCTL_PAYLOAD_1024B 0x0060
+#define PCI_EXP_DEVCTL_PAYLOAD_2048B 0x0080
+#define PCI_EXP_DEVCTL_PAYLOAD_4096B 0x00a0
 #define PCI_EXP_DEVCTL_EXT_TAG 0x0100
 #define PCI_EXP_DEVCTL_PHANTOM 0x0200
 #define PCI_EXP_DEVCTL_AUX_PME 0x0400