x86_abi_support.asm: use .rdata for win32/win64

Instead of `.rodata`. This fixes a non-zero exit code from nasm 3.0
which cause Visual Studio builds to fail. This also matches x86inc.asm.

Bug: 540261859
Fixed: 540261859
Change-Id: Ic869fb72622f122aa959922539b8956a23ea0069

Author: jzern

vpx_ports/x86_abi_support.asm

@@ -395,6 +395,10 @@ section .text
 %endmacro
 %elifidn __OUTPUT_FORMAT__,aout
 %define SECTION_RODATA section .data
+%elifidn __OUTPUT_FORMAT__,win32
+%define SECTION_RODATA section .rdata
+%elif LIBVPX_YASM_WIN64
+%define SECTION_RODATA section .rdata
 %else
 %define SECTION_RODATA section .rodata
 %endif