sunxi: Add sun5i support

Add support for the Allwinner A13 and A10s SoCs also know as the Allwinner
sun5i family, and the A13-OLinuXinoM A13 based and r7-tv-dongle A10s based
boards.

The only differences compared to the already supported sun4i and sun7i
families are all in the DRAM controller initialization:

-Different hcpr values
-Different MBUS settings
-Some other small initialization changes

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/boards.cfg b/boards.cfg
index af24128..20ad488 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -377,9 +377,11 @@
 Active  arm         armv7          s5pc1xx     samsung         goni                s5p_goni                              -                                                                                                                                 Robert Baldyga <r.baldyga@samsung.com>
 Active  arm         armv7          s5pc1xx     samsung         smdkc100            smdkc100                              -                                                                                                                                 Minkyu Kang <mk7.kang@samsung.com>
 Active  arm         armv7          socfpga     altera          socfpga             socfpga_cyclone5                      -                                                                                                                                 -
+Active  arm         armv7          sunxi       -               sunxi               A13-OLinuXinoM                        sun5i:A13_OLINUXINOM,SPL,CONS_INDEX=2                                                                                             Hans de Goede <hdegoede@redhat.com>
 Active  arm         armv7          sunxi       -               sunxi               Cubieboard                            sun4i:CUBIEBOARD,SPL                                                                                                              Hans de Goede <hdegoede@redhat.com>
 Active  arm         armv7          sunxi       -               sunxi               Cubietruck                            sun7i:CUBIETRUCK,SPL,SUNXI_GMAC,RGMII                                                                                             -
 Active  arm         armv7          sunxi       -               sunxi               Cubietruck_FEL                        sun7i:CUBIETRUCK,SPL_FEL,SUNXI_GMAC,RGMII                                                                                         -
+Active  arm         armv7          sunxi       -               sunxi               r7-tv-dongle                          sun5i:R7DONGLE,SPL                                                                                                                Hans de Goede <hdegoede@redhat.com>
 Active  arm         armv7          u8500       st-ericsson     snowball            snowball                              -                                                                                                                                 Mathieu Poirier <mathieu.poirier@linaro.org>
 Active  arm         armv7          u8500       st-ericsson     u8500               u8500_href                            -                                                                                                                                 -
 Active  arm         armv7          vf610       freescale       vf610twr            vf610twr                              vf610twr:IMX_CONFIG=board/freescale/vf610twr/imximage.cfg                                                                         Alison Wang <b18965@freescale.com>