ARC: nsim_{700|700be|hs38be}_defconfigs: Disable networking

We don't have yet any brc700 or big-enadian platforms with networking
support to run this particular configuration.

Whenever QEMU for ARC supports arc700 or big-endian targets we may revisit
this one.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

configs/nsim_700_defconfig

@@ -14,6 +14,7 @@ CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
 CONFIG_DEFAULT_DEVICE_TREE="nsim"
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+# CONFIG_NET is not set
 CONFIG_DM=y
 CONFIG_DM_SERIAL=y
 CONFIG_DEBUG_UART_SHIFT=2

configs/nsim_700be_defconfig

@@ -15,6 +15,7 @@ CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
 CONFIG_DEFAULT_DEVICE_TREE="nsim"
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+# CONFIG_NET is not set
 CONFIG_DM=y
 CONFIG_DM_SERIAL=y
 CONFIG_DEBUG_UART_SHIFT=2

configs/nsim_hs38be_defconfig

@@ -16,6 +16,7 @@ CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
 CONFIG_DEFAULT_DEVICE_TREE="nsim"
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+# CONFIG_NET is not set
 CONFIG_DM=y
 CONFIG_DM_SERIAL=y
 CONFIG_DEBUG_UART_SHIFT=2