tools/bpf: Use tab instead of white spaces to sync bpf.h

Just silence the following build warning:

Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs from latest version at 'include/uapi/linux/bpf.h'
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Link: https://lore.kernel.org/r/1675319486-27744-2-git-send-email-yangtiezhu@loongson.cnSigned-off-by: Alexei Starovoitov <ast@kernel.org>

tools/include/uapi/linux/bpf.h

@@ -5817,8 +5817,8 @@ enum {
 	BPF_F_ADJ_ROOM_ENCAP_L4_UDP	= (1ULL << 4),
 	BPF_F_ADJ_ROOM_NO_CSUM_RESET	= (1ULL << 5),
 	BPF_F_ADJ_ROOM_ENCAP_L2_ETH	= (1ULL << 6),
-	BPF_F_ADJ_ROOM_DECAP_L3_IPV4    = (1ULL << 7),
-	BPF_F_ADJ_ROOM_DECAP_L3_IPV6    = (1ULL << 8),
+	BPF_F_ADJ_ROOM_DECAP_L3_IPV4	= (1ULL << 7),
+	BPF_F_ADJ_ROOM_DECAP_L3_IPV6	= (1ULL << 8),
 };
 
 enum {