* NEWS: Add MIPS/Linux DSP support.

	* NEWS: Add MIPS/Linux DSP support.
	* mips-linux-tdep.c: Document post-2.6.12 o32 sigcontext layout.
	(SIGCONTEXT_DSPCTL): New macro.
	(SIGCONTEXT_HI1, SIGCONTEXT_LO1): Likewise.
	(SIGCONTEXT_HI2, SIGCONTEXT_LO2): Likewise.
	(SIGCONTEXT_HI3, SIGCONTEXT_LO3): Likewise.
	(N64_SIGCONTEXT_HI1, N64_SIGCONTEXT_HI2): Likewise.
	(N64_SIGCONTEXT_HI3): Likewise.
	(N64_SIGCONTEXT_LO1, N64_SIGCONTEXT_LO2): Likewise.
	(N64_SIGCONTEXT_LO3): Likewise.
	(N64_SIGCONTEXT_DSPCTL): Likewise.
	(N64_SIGCONTEXT_FPCSR): Clarify definition.
	(mips_linux_o32_sigframe_init): Handle DSP registers.
	(mips_linux_n32n64_sigframe_init): Likewise.