S32K Startup: stack pointer is initialized twice

[jan-bruckner-esr]

The stack pointer is initialized twice:

1. In line 325
2. In line 352

Additionally, the instruction in line 326 is not necessary. It loads the address of Reset_Handler into r0 but that is not used afterwards.
Seems like an artifact of jumping to Reset_Handler from there.

openbsw/executables/referenceApp/platforms/s32k148evb/main/src/bsp/startUp.S

Lines 317 to 352 in 403d15f

	/* ISR reloction */
	ISB
	DSB
	DMB
	ldr r0, =_NVIC_VTOR
	ldr r1, =__isr_vector
	str r1, [r0]
	ldr r0, [r1]
	mov sp, r0
	ldr r0, [r1, #4]
	ISB
	DSB
	DMB
	/* enable fpu */
	ldr r0, = _CPACR
	ldr r1, [r0]
	orr r1, r1, #0x00F00000
	str r1, [r0]
	/* Init the rest of the registers */
	ldr r1,=0
	ldr r2,=0
	ldr r3,=0
	ldr r4,=0
	ldr r5,=0
	ldr r6,=0
	ldr r7,=0
	mov r8,r7
	mov r9,r7
	mov r10,r7
	mov r11,r7
	mov r12,r7
	/* Initialize the stack pointer */
	ldr r0,=__StackTop
	mov r13,r0