ARM: dts: msm: Update the size for gold TLB dump size on SDM845

Right now we are allocating more than required dump size for TLB
buffers, reduce the size to the only the required amount.

Change-Id: I8cec6e2e16e82487d6288737105893477dbc7f56
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>