HACK: mach-snapdragon: allocate a bunch of space for the stack and dtb

Qualcomm DTBs can be pretty big (125k+)... We have plenty of RAM so
let's just give ourselves a few megabytes of headroom pre-relocation.

Yes this is extremely excessive but frankly it just doesn't matter.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/configs/qcom_defconfig b/configs/qcom_defconfig
index 1a38c04..bfb1c2e 100644
--- a/configs/qcom_defconfig
+++ b/configs/qcom_defconfig
@@ -15,6 +15,7 @@
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_USE_PREBOOT=y
 CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR=y
+CONFIG_SYS_INIT_SP_BSS_OFFSET=983040
 CONFIG_SYS_CBSIZE=512
 CONFIG_LOG_MAX_LEVEL=9
 CONFIG_LOG_DEFAULT_LEVEL=4