[POWERPC] Fix sed command lines for zlib source construction
Not every sed understands \+ so use the more portable * instead.
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
authored by Segher Boessenkool and committed by Paul Mackerras 67ccd2fc 8995ac87