exfat: don't turn on by default

Change-Id: I36ec727e3dc0a1ce97042f4e5b401f9aca7090d0
Merge remote-tracking branch 'cm_d2/cm-11.0' into lk-cm-kitkat
ramdisk: update to CM 0906
Fix sizeof-pointer-memaccess warning with gcc 4.8

This patch fixes wrong memcpy size when copying ltk value to
HCI_OP_LE_LTK_REPLY command.
Fix warnings for gcc-4.9

Change-Id: I07eb9f9d24e9524fbe28ffd563f5e9d079da49df
Merge remote-tracking branch 'cm_d2/cm-11.0' into lk-cm-kitkat
leanKernel v9.13