ARC: Move ENV_SIZE and ENV_OFFSET to Kconfig

Join the party of some ARM boards and drop more
items from include/configs/xxx.h.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/env/Kconfig b/env/Kconfig
index 9011109..c22cbbd 100644
--- a/env/Kconfig
+++ b/env/Kconfig
@@ -431,7 +431,7 @@
 	  It's a string of the EXT4 file name. This file use to store the
 	  environment (explicit path to the file)
 
-if ARCH_ROCKCHIP || ARCH_SUNXI || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
+if ARCH_ROCKCHIP || ARCH_SUNXI || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL || ARC
 
 config ENV_OFFSET
 	hex "Environment Offset"
@@ -441,6 +441,7 @@
 	default 0x88000 if ARCH_SUNXI
 	default 0xE0000 if ARCH_ZYNQ
 	default 0x1E00000 if ARCH_ZYNQMP
+	default 0 if ARC
 	help
 	  Offset from the start of the device (or partition)
 
@@ -449,6 +450,7 @@
 	default 0x40000 if ENV_IS_IN_SPI_FLASH && ARCH_ZYNQMP
 	default 0x20000 if ARCH_SUNXI || ARCH_ZYNQ
 	default 0x8000 if ARCH_ROCKCHIP || ARCH_ZYNQMP || ARCH_VERSAL
+	default 0x4000 if ARC
 	help
 	  Size of the environment storage area