android: radeonsi: fix build error due to wrong u_format.csv file path

android: radeonsi: fix build error due to wrong u_format.csv file path

GEN10_FORMAT_TABLE_INPUTS requires correction of u_format.csv file path
in order to avoid following build error:

ninja: error: 'external/mesa/util/format/u_format.csv',
needed by 'out/target/product/x86_64/gen/STATIC_LIBRARIES/libmesa_pipe_radeonsi_intermediates/radeonsi/gfx10_format_table.h',
missing and no known rule to make it

Fixes: 882ca6d ("util: Move gallium's PIPE_FORMAT utils to /util/format/")
Signed-off-by: Mauro Rossi <issor.oruam@gmail.com>