When saving a context on arm call the vfp handler

When adding kernel VFP support on arm a comparison instruction was
removed, however the branch to vfp_save_state was still conditional.
Remove the conditional check and always call into vfp_save_state as
it could cause unexpected results otherwise.

Sponsored by:	Arm Ltd

sys/arm/arm/swtch-v6.S

@@ -325,7 +325,7 @@ ENTRY(cpu_switch)
 	ldr	r3, [r10, #(TD_PCB)]
 	mov	r1, r3
 	mov	r0, r10
-	blne	_C_LABEL(vfp_save_state)
+	bl	_C_LABEL(vfp_save_state)
 #endif
 
 	/*

sys/arm/arm/swtch.S

@@ -101,7 +101,7 @@ ENTRY(savectx)
 #ifdef VFP
 	mov	r1, r0
 	mov	r0, #0
-	blne	_C_LABEL(vfp_save_state)
+	bl	_C_LABEL(vfp_save_state)
 #endif
 	add	sp, sp, #4;
 	ldmfd	sp!, {pc}