sunxi: H616: add LPDDR3 DRAM support

The H616 SoC has support for several types of DRAM: DDR3, LPDDR3,
DDR4 and LPDDR4.
At the moment, the driver only supports DDR3 memory.
Let's extend the driver to support the LPDDR3 memory. All "magic"
values obtained from the boot0.

Signed-off-by: Mikhail Kalashnikov <iuncuim@gmail.com>
Acked-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index b38dce6..e20c3a3 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -476,6 +476,14 @@
 	This option is the DDR3 timing used by the boot0 on H6 TV boxes
 	which use a DDR3-1333 timing.
 
+config SUNXI_DRAM_H616_LPDDR3
+	bool "LPDDR3 DRAM chips on the H616 DRAM controller"
+	select SUNXI_DRAM_LPDDR3
+	depends on DRAM_SUN50I_H616
+	help
+	  This option is the LPDDR3 timing used by the stock boot0 by
+	  Allwinner.
+
 config SUNXI_DRAM_H616_DDR3_1333
 	bool "DDR3-1333 boot0 timings on the H616 DRAM controller"
 	select SUNXI_DRAM_DDR3