XMM626x: fix Samsung RIL v9 update

The Samsung proprietary RIL commands are mapped using the
same array as the standard commands. This means that the
MAX and UNSOL_MAX macros must be updated whenever standard
commands are added, or the Samsung commands will noe be
correctly mapped.

Change-Id: Ic9dc6305bfb6d93763445b22cf24d9ee84db98c2
Signed-off-by: Bjørn Mork <bjorn@mork.no>