Merge #152

152:  Fix __delay asm function for the thumbv6m-none-eabi target  r=therealprof a=Disasm

Before:
```
00000000 <__delay>:
   0:	46c0      	nop			; (mov r8, r8)
   2:	3801      	subs	r0, #1
   4:	d1fe      	bne.n	0 <__delay>
			4: R_ARM_THM_JUMP8	__delay
   6:	4770      	bx	lr
```

After:
```
00000000 <__delay>:
   0:	46c0      	nop			; (mov r8, r8)
   2:	3801      	subs	r0, #1
   4:	d1fc      	bne.n	0 <__delay>
   6:	4770      	bx	lr
```

Closes #125

Co-authored-by: Vadim Kaushan <[email protected]>

Author: bors[bot]

asm.s

@@ -31,9 +31,10 @@ __cpsie:
   .syntax unified
   .thumb_func
 __delay:
+1:
   nop
   subs r0, #1
-  bne __delay
+  bne 1b  // Branch to 1 instead of __delay does not generate R_ARM_THM_JUMP8 relocation, which breaks linking on the thumbv6m-none-eabi target
   bx lr
 
   .section .text.__dmb