arc: Rename AXS101 board to more generic AXS10x

As of now we have 2 flavors of ARC SDP boards:
 1) AXS101 - with ARC770 in ASIC
 2) AXS103 - with ARC HS38 in FPGA

Both options share exactly the same base-board and only differ with
CPU-tiles in use. That means all peripherals are the same (they are
implemented in FPGA on the base-board) and so generic board could be
used for both.

While at it:
 * Recreated defconfigs with savedefconfig
 * In include/configs/axs10x.h numerical sizes replaced with
defines from linux/sizes.h for better readability.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/axs101_defconfig b/configs/axs101_defconfig
index 10e802d..dd82581 100644
--- a/configs/axs101_defconfig
+++ b/configs/axs101_defconfig
@@ -1,7 +1,7 @@
 CONFIG_ARC=y
 CONFIG_SYS_DCACHE_OFF=y
-CONFIG_DM_SERIAL=y
 CONFIG_SYS_CLK_FREQ=750000000
+CONFIG_DM_SERIAL=y
 CONFIG_SYS_TEXT_BASE=0x81000000
 CONFIG_DEFAULT_DEVICE_TREE="axs10x"
 CONFIG_BOOTDELAY=3