libzpool: move ZFS-specific headers from libspl

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #17861

lib/libspl/include/Makefile.am

@@ -24,8 +24,6 @@ libspl_rpc_HEADERS = \
 
 libspl_sysdir = $(libspldir)/sys
 libspl_sys_HEADERS = \
-	%D%/sys/abd_os.h \
-	%D%/sys/abd_impl_os.h \
 	%D%/sys/acl.h \
 	%D%/sys/acl_impl.h \
 	%D%/sys/asm_linkage.h \
@@ -58,7 +56,6 @@ libspl_sys_HEADERS = \
 	%D%/sys/systeminfo.h \
 	%D%/sys/time.h \
 	%D%/sys/trace_spl.h \
-	%D%/sys/trace_zfs.h \
 	%D%/sys/tunables.h \
 	%D%/sys/types.h \
 	%D%/sys/types32.h \

lib/libzpool/include/Makefile.am

@@ -1,3 +1,6 @@
 libzpool_sysdir = $(includedir)/libzpool/sys
 libzpool_sys_HEADERS = \
+	%D%/sys/abd_os.h \
+	%D%/sys/abd_impl_os.h \
+	%D%/sys/trace_zfs.h \
 	%D%/sys/zfs_context_os.h