msm8x60_celox: Increase Ion camera heap size by 6MB

Fixes camera force closes. The MM heap could not be shrunk any further, so we lost RAM. Userspace now has 847MB of RAM.

Change-Id: I25aa73235e8062e4948f2c7c720d5af7b01c2897
Signed-off-by: Sultanxda <sultanxda@gmail.com>