illegal operand error for "sw" operation

Created by: superflyers

affected the version pre-released at 20230814

/libs/dsp/src/TransformFunctions/dd_dct2_f32.c' -- 'dd_dct2_f32.o' /tmp/ccAhyHfb.s: Assembler messages: /tmp/ccAhyHfb.s:75: Error: illegal operands sw a5,(a6),4' /tmp/ccAhyHfb.s:90: Error: illegal operands sw a5,(a6),4' /tmp/ccAhyHfb.s:106: Error: illegal operands sw a5,(a3),4' /tmp/ccAhyHfb.s:174: Error: illegal operands sw a0,(a3),4'