compiler-rt: Fix compilation of clzsi for armv6 targets
compiler-rt: Fix compilation of clzsi for armv6 targets

raulgrell/zig,andrewrk/zig,raulgrell/zig,zig-lang/zig,zig-lang/zig,raulgrell/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,raulgrell/zig