env: kconfig: Restrict rockchip env for MMC

Rockchip do support SPI flash as well, so there is
a possibility of using flash environment for those
use cases.

So, restrict the current env offset, size for MMC.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/env/Kconfig b/env/Kconfig
index 4661082..ac7b8f7 100644
--- a/env/Kconfig
+++ b/env/Kconfig
@@ -491,7 +491,7 @@
 	hex "Environment 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
+	default 0x3f8000 if ARCH_ROCKCHIP && ENV_IS_IN_MMC
 	default 0x88000 if ARCH_SUNXI
 	default 0xE0000 if ARCH_ZYNQ
 	default 0x1E00000 if ARCH_ZYNQMP
@@ -514,7 +514,8 @@
 	hex "Environment 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 || ARCH_ZYNQMP || ARCH_VERSAL
+	default 0x8000 if ARCH_ROCKCHIP && ENV_IS_IN_MMC
+	default 0x8000 if ARCH_ZYNQMP || ARCH_VERSAL
 	default 0x4000 if ARC
 	default 0x1f000
 	help