vold: wildcard support for device path matching

vold: wildcard support for device path matching

Switching the kernel to the new sysfs layout (unselecting
CONFIG_SYSFS_DEPRECATED) complicates VolD block device recognition.

The uevents are reporting full specific paths, such as:

/devices/pci0000:0e/0000:0e:18.0/mmc_host/mmc0/mmc0:1234/block/mmcblk0

Because the full device path may contain variable IDs (in this MMC
case "1234") using full path entries in fstab does not work. Android
supports partial matches but only as a prefix at the beginning of the
path.

This patch adds support for matching shell wildcard patterns via
fnmatch(). The prefix matching rule is preserved, but if it is
detected a warning is issued.

Change-Id: Ia0c5eddec06bd71bec6ce838be3b5345278e0bab
Author:    Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Radu Moisan <radu.moisan@intel.com>
Signed-off-by: Jim Bride <jim.bride@intel.com>
Reviewed-by: Bergeron, Michael <michael.bergeron@intel.com>
Tested-by: Uyyala, Sridhar <sridhar.uyyala@intel.com>
Reviewed-by: Leung, Daniel <daniel.leung@intel.com>
Reviewed-by: Uyyala, Sridhar <sridhar.uyyala@intel.com>