main/lk2nd-msm8953: compile with -O1 to fix booting (MR 4196)
Currently, at least on fairphone-fp3 doing "fastboot boot" crashes
lk2nd, presumably due to some bug when compiled with a newer gcc
version.
Compiling with -O1 works well.
[81660] booting linux @ 0x10000000, ramdisk @ 0x13600000 (3339187), tags/device tree @ 0x13400000
[81660] Jumping to kernel via monitor
[81660] data abort, halting
[81660] r0 0x8f7724fc r1 0x8f772504 r2 0x00000000 r3 0x00000000
[81660] r4 0x00000001 r5 0x8f7724fb r6 0x00000001 r7 0x5b080000
[81660] r8 0x00000000 r9 0x011b9000 r10 0x8f741094 r11 0x8f7725ac
[81660] r12 0x00000001 usp 0x00000000 ulr 0x00000000 pc 0x8f630690
[81660] spsr 0x600001d3
[81660] fiq r13 0x8f729000 r14 0x00000000
[81660] irq r13 0x8f72d1a0 r14 0x8f620c2c
[81660] *svc r13 0x8f7724f8 r14 0x8f6147b0
[81660] und r13 0x8f729000 r14 0x00000000
[81660] sys r13 0x00000000 r14 0x00000000
[81660] bottom of stack at 0x8f7724f8:
0x8f7724f8: 00726f63 824fe86d 00020000 8f7724fb |cor.m.O.......w.|
0x8f772508: 8f742c01 824fe86d 10000000 00000000 |..t.m.O.........|
0x8f772518: 13400000 00000000 8f628aa0 8f6147b0 |..........b..Ga.|
0x8f772528: 00000000 00000000 13400000 10000000 |................|
0x8f772538: 00000000 00000001 0000000f 824fe86d |............m.O.|
0x8f772548: 13400000 00000000 00000000 00000000 |................|
0x8f772558: 00000000 00000000 00000000 00000000 |................|
0x8f772568: 00000000 00000000 00000000 00000000 |................|
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