env: Enable SPI flash env for rockchip

Most of the SPI flash devices in rockchip are 16MiB size.

So, keeping U-Boot proper offset start from 128MiB with 1MiB
size and then start env of 8KiB would be a compatible location
between all variants of flash sizes.

This patch add env start from 0x14000 with a size of 8KiB.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

env/Kconfig

@@ -492,6 +492,7 @@ config ENV_OFFSET
 	depends on ENV_IS_IN_EEPROM || ENV_IS_IN_MMC || ENV_IS_IN_NAND || \
 		    ENV_IS_IN_SPI_FLASH
 	default 0x3f8000 if ARCH_ROCKCHIP && ENV_IS_IN_MMC
+	default 0x140000 if ARCH_ROCKCHIP && ENV_IS_IN_SPI_FLASH
 	default 0x88000 if ARCH_SUNXI
 	default 0xE0000 if ARCH_ZYNQ
 	default 0x1E00000 if ARCH_ZYNQMP
@@ -515,6 +516,7 @@ config ENV_SIZE
 	default 0x40000 if ENV_IS_IN_SPI_FLASH && ARCH_ZYNQMP
 	default 0x20000 if ARCH_SUNXI || ARCH_ZYNQ || ARCH_OMAP2PLUS || ARCH_AT91
 	default 0x8000 if ARCH_ROCKCHIP && ENV_IS_IN_MMC
+	default 0x2000 if ARCH_ROCKCHIP && ENV_IS_IN_SPI_FLASH
 	default 0x8000 if ARCH_ZYNQMP || ARCH_VERSAL
 	default 0x4000 if ARC
 	default 0x1f000
@@ -524,6 +526,7 @@ config ENV_SIZE
 config ENV_SECT_SIZE
 	hex "Environment Sector-Size"
 	depends on ENV_IS_IN_FLASH || ENV_IS_IN_SPI_FLASH
+	default 0x2000 if ARCH_ROCKCHIP
 	default 0x40000 if ARCH_ZYNQMP || ARCH_VERSAL
 	default 0x20000 if ARCH_ZYNQ || ARCH_OMAP2PLUS || ARCH_AT91
 	help