[PATCH] configs: add PineTab defconfig

[Nicolas Boulenguez]

From: Arnaud Ferraris <arnaud.ferraris at collabora.com>

The PineTab device-tree is already in u-boot, this commit adds the corresponding
defconfig, based on pinephone_defconfig.

Signed-off-by: Arnaud Ferraris <arnaud.ferraris at collabora.com>

--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -471,6 +471,11 @@ M:	Samuel Holland <samuel at sholland.org>
 S:	Maintained
 F:	configs/pinephone_defconfig
 
+PINETAB BOARD
+M:	Arnaud Ferraris <arnaud.ferraris at collabora.com>
+S:	Maintained
+F:	configs/pinetab_defconfig
+
 R16 EVB PARROT BOARD
 M:	Quentin Schulz <quentin.schulz at free-electrons.com>
 S:	Maintained
--- /dev/null
+++ b/configs/pinetab_defconfig
@@ -0,0 +1,21 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_SPL=y
+CONFIG_IDENT_STRING=""
+CONFIG_MACH_SUN50I=y
+CONFIG_SUNXI_DRAM_LPDDR3_STOCK=y
+CONFIG_DRAM_CLK=552
+CONFIG_DRAM_ZQ=3881949
+CONFIG_MMC_SUNXI_SLOT_EXTRA=2
+# CONFIG_VIDEO_DE2 is not set
+CONFIG_DEFAULT_DEVICE_TREE="sun50i-a64-pinetab"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_BOOTDELAY=0
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+# CONFIG_DISPLAY_CPUINFO is not set
+# CONFIG_DISPLAY_BOARDINFO is not set
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+# CONFIG_SPL_BANNER_PRINT is not set
+# CONFIG_SPL_POWER_SUPPORT is not set
+# CONFIG_NET is not set
+# CONFIG_EFI_LOADER is not set