lwip: fix trailing whitespace in TLS config #4087

Job	Run time
A9 :default.cfg	2m 7s
RISCV-rtsmart :default.cfg	1m 24s
RISCV-smp :default.cfg	1m 28s
A9 :kernel/mem.cfg	1m 31s
RISCV :default.cfg	1m 24s
A9-rtsmart :default.cfg	1m 30s
AARCH64 :default.cfg	1m 26s
A9-rtsmart :kernel/kernel_basic.cfg	6m 27s
AARCH64 :default.cfg	1m 22s
AARCH64-smp :default.cfg	1m 30s
A9 :kernel/kernel_basic.cfg	6m 40s
XUANTIE-rtsmart :kernel/kernel_basic.cfg	7m 22s
A9-rtsmart :kernel/ipc.cfg	5m 38s
A9-rtsmart :kernel/mem.cfg	1m 31s
AARCH64-smp :default.cfg	1m 36s
RISCV-rtsmart :kernel/mem.cfg	1m 7s
A9-smp :kernel/kernel_basic.cfg	6m 47s
A9 :kernel/ipc.cfg	5m 27s
XUANTIE-rtsmart :default.cfg	2m 3s
AARCH64-rtsmart :default.cfg	1m 25s
A9-smp :default.cfg	1m 49s
RISCV :kernel/kernel_basic.cfg	7m 8s
RISCV :kernel/mem.cfg	1m 19s
A9-smp :kernel/mem.cfg	1m 40s
AARCH64-rtsmart :default.cfg	1m 30s
RISCV-rtsmart :kernel/ipc.cfg	5m 33s
RISCV :kernel/atomic_c11.cfg	1m 20s
XUANTIE-rtsmart :kernel/ipc.cfg	6m 27s
A9-smp :kernel/ipc.cfg	5m 47s
AARCH64-smp :kernel/mem.cfg	1m 36s
XUANTIE-rtsmart :kernel/mem.cfg	2m 26s
A9 :kernel/atomic_c11.cfg	1m 28s
RISCV-smp :kernel/mem.cfg	1m 27s
RISCV :kernel/ipc.cfg	5m 33s
A9 :cpp11/cpp11.cfg	1m 28s
A9 :components/netdev.cfg	1m 42s
AARCH64 :kernel/mem.cfg	1m 39s
A9 :components/sal.cfg	1m 41s
A9 :components/lwip.cfg	1m 22s
A9 :components/dfs.cfg	1m 24s
RISCV-rtsmart :kernel/kernel_basic.cfg	6m 35s
AARCH64-rtsmart :kernel/mem.cfg	1m 19s
	2h 1m 58s

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