rockchip: board: Add minimal generic RK3588S/RK3588 board

Add a minimal generic RK3588S/RK3588 board that only have eMMC and SDMMC
enabled. This defconfig can be used to boot from eMMC or SD-card on most
RK3588S/RK3588 boards that follow reference board design.

Also fix the alphabetical order of RK3588 boards listed in Makefile and
documentation.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 6e04910..951327b 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -196,14 +196,15 @@
 	rk3588-edgeble-neu6a-io.dtb \
 	rk3588-edgeble-neu6b-io.dtb \
 	rk3588-evb1-v10.dtb \
+	rk3588-generic.dtb \
 	rk3588-jaguar.dtb \
 	rk3588-nanopc-t6.dtb \
 	rk3588s-orangepi-5.dtb \
 	rk3588-orangepi-5-plus.dtb \
 	rk3588-quartzpro64.dtb \
-	rk3588-turing-rk1.dtb \
 	rk3588s-rock-5a.dtb \
-	rk3588-rock-5b.dtb
+	rk3588-rock-5b.dtb \
+	rk3588-turing-rk1.dtb
 
 dtb-$(CONFIG_ROCKCHIP_RV1108) += \
 	rv1108-elgin-r1.dtb \