done that myself.

sbit at 0xB2 P3_2 ;
#define button P3_2

And you will end up with TWO definitions of the same bit

instead use
sbit at 0xB2 button

With two definitions for the same bit you will some day have both used and, in a debugging session, not be able to figure out why a bit does not behave like it should because you look only for one of the names.

Once I spent an inordinate amount of time debugging someone elses code for the above reason and ever since I have used my own sfr definition files (grab the standard, copy and rename it) with bits renamed as needed for clarity.

Erik