Update to v5.6 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.6

Add a new method for removing structures. This is to deal with the kernel
headers changing some definitions of timeval to __kernel_old_timeval
and itimerval to __kernel_old_itimerval. Remove the __kernel_old_XX
strutures and change the other structures to the previous definitions.

This only works so long as these structures stay the same, if they
diverge, then a different strategy will need to be implemented.

Test: Booted cuttlefish/walleye.
Test: Ran bionic-unit-tests on cuttlefish/walleye.
Change-Id: I0a61f4fa6e4155c602e0414d9b38c2e1637829af
diff --git a/libc/kernel/uapi/drm/drm_fourcc.h b/libc/kernel/uapi/drm/drm_fourcc.h
index a316269..898d9ad 100644
--- a/libc/kernel/uapi/drm/drm_fourcc.h
+++ b/libc/kernel/uapi/drm/drm_fourcc.h
@@ -145,6 +145,8 @@
 #define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)
 #define I915_FORMAT_MOD_Y_TILED_CCS fourcc_mod_code(INTEL, 4)
 #define I915_FORMAT_MOD_Yf_TILED_CCS fourcc_mod_code(INTEL, 5)
+#define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS fourcc_mod_code(INTEL, 6)
+#define I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS fourcc_mod_code(INTEL, 7)
 #define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE fourcc_mod_code(SAMSUNG, 1)
 #define DRM_FORMAT_MOD_SAMSUNG_16_16_TILE fourcc_mod_code(SAMSUNG, 2)
 #define DRM_FORMAT_MOD_QCOM_COMPRESSED fourcc_mod_code(QCOM, 1)