rockchip: puma: reorganize devicetrees to actually work and match upstream

So far the puma dts files only just included the main puma dtsi without
handling the actual baseboard and rk3399-puma.dtsi was very much
detached from the variant in the mainline Linux kernel.

Recent changes resulted in a strange situation with nonworking puma boards.

Commit ab800e5a6f28 ("arm: dts: rockchip: puma: move U-Boot specific bits to u-boot.dtsi")
moved the sdram include from rk3399-puma-ddrX.dts to new files
rk3399-puma-ddrx-u-boot.dtsi which were never included anywhere though.

Commit 167efc2c7a46 ("arm64: dts: rk3399: Sync v5.7-rc1 from Linux")
replaced the rk3399-puma.dtsi nearly completely, but in the kernel
it definitly depends on a baseboard dts to actually enable peripherals
like sd-slot, uarts, etc.

So to untagle this and bring the whole thing more in line with mainline
Linux, bring the rk3399-puma-haikou.dts over as well, drop the separate
DDR-option devicetrees and instead replace them with a puma Kconfig option
to select and include the needed DDR variant.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/board/theobroma-systems/puma_rk3399/Kconfig b/board/theobroma-systems/puma_rk3399/Kconfig
index 9e23252..e82623a 100644
--- a/board/theobroma-systems/puma_rk3399/Kconfig
+++ b/board/theobroma-systems/puma_rk3399/Kconfig
@@ -18,4 +18,19 @@
 config ENV_OFFSET
 	default 0x3fc000 if ENV_IS_IN_SPI_FLASH
 
+choice
+	prompt "Theobroma Systems RK3399-Q7 DDR Option"
+	default TARGET_PUMA_RK3399_RAM_DDR3_1333
+
+config TARGET_PUMA_RK3399_RAM_DDR3_1333
+	bool "DDR3-1333MHz"
+
+config TARGET_PUMA_RK3399_RAM_DDR3_1600
+	bool "DDR3-1600MHz"
+
+config TARGET_PUMA_RK3399_RAM_DDR3_1866
+	bool "DDR3-1866MHz"
+
+endchoice
+
 endif