to make page Subsystems APIs more organized as requested

Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
---
 Documentation/subsystem-apis.rst | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/Documentation/subsystem-apis.rst b/Documentation/subsystem-apis.rst
index 90a0535a932a..7453586114d4 100644
--- a/Documentation/subsystem-apis.rst
+++ b/Documentation/subsystem-apis.rst
@@ -60,20 +60,28 @@ Storage interfaces
    scsi/index
    target/index
 
-**Fixme**: much more organizational work is needed here.
+Embedded interfaces
+-------------------
+
+.. toctree::
+   :maxdepth: 1
+
+   iio/index
+   spi/index
+   i2c/index
+   fpga/index
+   w1/index
+   misc-devices/index
+
+**Fixme**: some organizational work is still needed here.
 
 .. toctree::
    :maxdepth: 1
 
    accounting/index
    cpu-freq/index
-   fpga/index
-   i2c/index
-   iio/index
    leds/index
    pcmcia/index
-   spi/index
-   w1/index
    watchdog/index
    virt/index
    hwmon/index
@@ -83,6 +91,5 @@ Storage interfaces
    bpf/index
    usb/index
    PCI/index
-   misc-devices/index
    peci/index
    wmi/index
-- 
2.41.0