Provisional fix for bug 3508 - Persistent storage support breaks Linux compatibility. Enables libnvmemmory.so to be built and dynamically linked on Linux and rom boot reports persistent storage image created OK, but ROM then crashes.

struct target_pt_regs {
	abi_ulong u_regs[16];
	abi_ulong tstate;
	abi_ulong pc;
	abi_ulong npc;
	abi_ulong y;
	abi_ulong fprs;
};

#define UNAME_MACHINE "sun4u"