linux-aspeed-sdk: g6: Enable HIGHMEM and EARLY_PRINTK

Highmem is needed for the kernel to be able to use the full 2GB of RAM
in the EVB. Earlyprintk is there for debugging boot failures.

Enable DETECT_HUNG_TASK for extra debugability.

Change-Id: I6db3753ac44646ae9da3c98b89293f75aec06e4c
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/recipes-kernel/linux/linux-aspeed-sdk/aspeed-g6/defconfig b/recipes-kernel/linux/linux-aspeed-sdk/aspeed-g6/defconfig
index 035b9c0..93ecece 100644
--- a/recipes-kernel/linux/linux-aspeed-sdk/aspeed-g6/defconfig
+++ b/recipes-kernel/linux/linux-aspeed-sdk/aspeed-g6/defconfig
@@ -28,6 +28,7 @@
 CONFIG_SMP=y
 CONFIG_HAVE_ARM_ARCH_TIMER=y
 CONFIG_VMSPLIT_2G=y
+CONFIG_HIGHMEM=y
 CONFIG_NR_CPUS=2
 CONFIG_UACCESS_WITH_MEMCPY=y
 CONFIG_SECCOMP=y
@@ -280,7 +281,6 @@
 CONFIG_GDB_SCRIPTS=y
 CONFIG_STRIP_ASM_SYMS=y
 CONFIG_SOFTLOCKUP_DETECTOR=y
-# CONFIG_DETECT_HUNG_TASK is not set
 CONFIG_WQ_WATCHDOG=y
 CONFIG_PANIC_ON_OOPS=y
 CONFIG_PANIC_TIMEOUT=-1
@@ -290,3 +290,8 @@
 # CONFIG_RUNTIME_TESTING_MENU is not set
 CONFIG_DEBUG_WX=y
 CONFIG_DEBUG_USER=y
+CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_8250=y
+CONFIG_DEBUG_UART_PHYS=0x1e784000
+CONFIG_DEBUG_UART_VIRT=0xf8184000
+CONFIG_EARLY_PRINTK=y