doc: move misc services into OS Service section

Move remaining services from guides into OS services.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/doc/kernel/index.rst b/doc/kernel/index.rst
index 8c52a95..feec4b9 100644
--- a/doc/kernel/index.rst
+++ b/doc/kernel/index.rst
@@ -9,8 +9,10 @@
    services/index.rst
    drivers/index.rst
    usermode/index.rst
+   libc/index.rst
    memory_management/index.rst
    data_structures/index.rst
    timing_functions/index.rst
    timeutil.rst
    util/index.rst
+   iterable_sections/index.rst
diff --git a/doc/reference/iterable_sections/index.rst b/doc/kernel/iterable_sections/index.rst
similarity index 100%
rename from doc/reference/iterable_sections/index.rst
rename to doc/kernel/iterable_sections/index.rst
diff --git a/doc/reference/libc/index.rst b/doc/kernel/libc/index.rst
similarity index 100%
rename from doc/reference/libc/index.rst
rename to doc/kernel/libc/index.rst
diff --git a/doc/services/index.rst b/doc/services/index.rst
index f5f2b38..d2e1488 100644
--- a/doc/services/index.rst
+++ b/doc/services/index.rst
@@ -20,3 +20,5 @@
    shell/index.rst
    settings/index.rst
    smf/index.rst
+   storage/index.rst
+   task_wdt/index.rst
diff --git a/doc/reference/storage/disk/access.rst b/doc/services/storage/disk/access.rst
similarity index 100%
rename from doc/reference/storage/disk/access.rst
rename to doc/services/storage/disk/access.rst
diff --git a/doc/reference/storage/fcb/fcb.rst b/doc/services/storage/fcb/fcb.rst
similarity index 100%
rename from doc/reference/storage/fcb/fcb.rst
rename to doc/services/storage/fcb/fcb.rst
diff --git a/doc/reference/storage/flash_map/example_fragment.dts b/doc/services/storage/flash_map/example_fragment.dts
similarity index 100%
rename from doc/reference/storage/flash_map/example_fragment.dts
rename to doc/services/storage/flash_map/example_fragment.dts
diff --git a/doc/reference/storage/flash_map/flash_map.rst b/doc/services/storage/flash_map/flash_map.rst
similarity index 100%
rename from doc/reference/storage/flash_map/flash_map.rst
rename to doc/services/storage/flash_map/flash_map.rst
diff --git a/doc/reference/storage/index.rst b/doc/services/storage/index.rst
similarity index 100%
rename from doc/reference/storage/index.rst
rename to doc/services/storage/index.rst
diff --git a/doc/reference/storage/nvs/nvs.rst b/doc/services/storage/nvs/nvs.rst
similarity index 100%
rename from doc/reference/storage/nvs/nvs.rst
rename to doc/services/storage/nvs/nvs.rst
diff --git a/doc/reference/storage/stream/stream_flash.rst b/doc/services/storage/stream/stream_flash.rst
similarity index 100%
rename from doc/reference/storage/stream/stream_flash.rst
rename to doc/services/storage/stream/stream_flash.rst
diff --git a/doc/reference/task_wdt/index.rst b/doc/services/task_wdt/index.rst
similarity index 100%
rename from doc/reference/task_wdt/index.rst
rename to doc/services/task_wdt/index.rst