musl: disable hardware FPU registers usage

This was crashing applications, thanks to Rich Felker for the suggestion.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 34317

toolchain/musl/patches-0.9.7/002-no_mips_fpu.patch

+diff -urN musl-0.9.7/src/setjmp/mips/longjmp.s musl-0.9.7.new/src/setjmp/mips/longjmp.s
+--- musl-0.9.7/src/setjmp/mips/longjmp.s	2012-11-23 17:03:07.000000000 +0100
++++ musl-0.9.7.new/src/setjmp/mips/longjmp.s	2012-11-23 21:52:57.353668480 +0100
+@@ -10,21 +10,7 @@
+ 	bne     $2, $0, 1f
+ 	nop
+ 	addu    $2, $2, 1
+-1:	lw      $8,  48($4)
+-	ctc1    $8,  $31
+-	lwc1    $20, 56($4)
+-	lwc1    $21, 60($4)
+-	lwc1    $22, 64($4)
+-	lwc1    $23, 68($4)
+-	lwc1    $24, 72($4)
+-	lwc1    $25, 76($4)
+-	lwc1    $26, 80($4)
+-	lwc1    $27, 84($4)
+-	lwc1    $28, 88($4)
+-	lwc1    $29, 92($4)
+-	lwc1    $30, 96($4)
+-	lwc1    $31, 100($4)
+-	lw      $ra,  0($4)
++1:	lw      $ra,  0($4)
+ 	lw      $sp,  4($4)
+ 	lw      $16,  8($4)
+ 	lw      $17, 12($4)
+diff -urN musl-0.9.7/src/setjmp/mips/setjmp.s musl-0.9.7.new/src/setjmp/mips/setjmp.s
+--- musl-0.9.7/src/setjmp/mips/setjmp.s	2012-11-23 17:03:07.000000000 +0100
++++ musl-0.9.7.new/src/setjmp/mips/setjmp.s	2012-11-23 21:52:33.713667876 +0100
+@@ -21,19 +21,5 @@
+ 	sw      $23, 36($4)
+ 	sw      $30, 40($4)
+ 	sw      $28, 44($4)
+-	cfc1    $8, $31
+-	sw      $8,  48($4)
+-	swc1    $20, 56($4)
+-	swc1    $21, 60($4)
+-	swc1    $22, 64($4)
+-	swc1    $23, 68($4)
+-	swc1    $24, 72($4)
+-	swc1    $25, 76($4)
+-	swc1    $26, 80($4)
+-	swc1    $27, 84($4)
+-	swc1    $28, 88($4)
+-	swc1    $29, 92($4)
+-	swc1    $30, 96($4)
+-	swc1    $31, 100($4)
+ 	jr      $ra
+ 	li      $2, 0