Update to v6.12 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.12

Comment out the TAG usage of the __struct_group macro in linux/pkt_cls.h.
The kernel upstream is either going to revert this usage of __struct_group
or fix this in another way. When set, it creates a named struct in an
anonyous union, which is not allowed in C++.

Test: Builds and bionic unit tests pass on raven.
Change-Id: Ibb49550dfdc86fa0fc888b51d893959b6d433c59
diff --git a/libc/kernel/uapi/asm-arm64/asm/sigcontext.h b/libc/kernel/uapi/asm-arm64/asm/sigcontext.h
index 8e48d55..a845a03 100644
--- a/libc/kernel/uapi/asm-arm64/asm/sigcontext.h
+++ b/libc/kernel/uapi/asm-arm64/asm/sigcontext.h
@@ -32,6 +32,11 @@
   struct _aarch64_ctx head;
   __u64 esr;
 };
+#define POE_MAGIC 0x504f4530
+struct poe_context {
+  struct _aarch64_ctx head;
+  __u64 por_el0;
+};
 #define EXTRA_MAGIC 0x45585401
 struct extra_context {
   struct _aarch64_ctx head;
@@ -95,12 +100,12 @@
 #define SVE_SIG_REGS_SIZE(vq) (__SVE_FFR_OFFSET(vq) + __SVE_FFR_SIZE(vq))
 #define SVE_SIG_CONTEXT_SIZE(vq) (SVE_SIG_REGS_OFFSET + SVE_SIG_REGS_SIZE(vq))
 #define ZA_SIG_REGS_OFFSET ((sizeof(struct za_context) + (__SVE_VQ_BYTES - 1)) / __SVE_VQ_BYTES * __SVE_VQ_BYTES)
-#define ZA_SIG_REGS_SIZE(vq) ((vq * __SVE_VQ_BYTES) * (vq * __SVE_VQ_BYTES))
-#define ZA_SIG_ZAV_OFFSET(vq,n) (ZA_SIG_REGS_OFFSET + (SVE_SIG_ZREG_SIZE(vq) * n))
+#define ZA_SIG_REGS_SIZE(vq) (((vq) * __SVE_VQ_BYTES) * ((vq) * __SVE_VQ_BYTES))
+#define ZA_SIG_ZAV_OFFSET(vq,n) (ZA_SIG_REGS_OFFSET + (SVE_SIG_ZREG_SIZE(vq) * (n)))
 #define ZA_SIG_CONTEXT_SIZE(vq) (ZA_SIG_REGS_OFFSET + ZA_SIG_REGS_SIZE(vq))
 #define ZT_SIG_REG_SIZE 512
 #define ZT_SIG_REG_BYTES (ZT_SIG_REG_SIZE / 8)
 #define ZT_SIG_REGS_OFFSET sizeof(struct zt_context)
-#define ZT_SIG_REGS_SIZE(n) (ZT_SIG_REG_BYTES * n)
+#define ZT_SIG_REGS_SIZE(n) (ZT_SIG_REG_BYTES * (n))
 #define ZT_SIG_CONTEXT_SIZE(n) (sizeof(struct zt_context) + ZT_SIG_REGS_SIZE(n))
 #endif