Add missing guard defines for simd_stat

This adds the HAVE_KERNEL_NEON and HAVE_KERNEL_FPU_INTERNAL
guards to simd_stat.c defaulted to 0 to make it build again.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Shengqi Chen <harry-chen@outlook.com>
Signed-off-by: Sebastian Wuerl <s.wuerl@mailbox.org>
Closes openzfs#16558

module/zcommon/simd_stat.c

@@ -38,6 +38,12 @@ kstat_t *simd_stat_kstat;
 #ifndef HAVE_KERNEL_FPU
 #define	HAVE_KERNEL_FPU (0)
 #endif
+#ifndef HAVE_KERNEL_NEON
+#define	HAVE_KERNEL_NEON (0)
+#endif
+#ifndef HAVE_KERNEL_FPU_INTERNAL
+#define	HAVE_KERNEL_FPU_INTERNAL (0)
+#endif
 #ifndef HAVE_UNDERSCORE_KERNEL_FPU
 #define	HAVE_UNDERSCORE_KERNEL_FPU (0)
 #endif