[KEY]: Fix conversion between IPSEC_MODE_xxx and XFRM_MODE_xxx.
[KEY]: Fix conversion between IPSEC_MODE_xxx and XFRM_MODE_xxx.

We should not blindly convert between IPSEC_MODE_xxx and XFRM_MODE_xxx just
by incrementing / decrementing because the assumption is not true any longer.

Signed-off-by: Kazunori MIYAZAWA <7420f9d76572644254faf88ba1544d12a5df3e37@linux-ipv6.org>
Singed-off-by: YOSHIFUJI Hideaki <948b80da4254122ea1e8973dd9930d46b7654cf3@linux-ipv6.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas