arc: emsdp: Add initialization of PSRAM

If the "Page Mode" is not enabled on the device,
read operations from PSRAM may result in incorrect data.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
diff --git a/configs/emsdp_defconfig b/configs/emsdp_defconfig
index 64281d0..5e55e3e 100644
--- a/configs/emsdp_defconfig
+++ b/configs/emsdp_defconfig
@@ -7,6 +7,7 @@
 CONFIG_SYS_CLK_FREQ=40000000
 # CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
 CONFIG_VERSION_VARIABLE=y
+CONFIG_BOARD_EARLY_INIT_R=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="emsdp# "
 # CONFIG_CMD_BOOTD is not set