CONFIG_MACH_HERALD is not available for the selected architecture x86.
Result is shown for architecture arm
HTC Herald
modulename: board-htcherald.ko
configname: CONFIG_MACH_HERALD
Linux Kernel Configuration
└─>TI OMAP1 specific features
└─>HTC Herald
In linux kernel since version 2.6.33 (release Date: 2010-02-24)
HTC Herald smartphone support (AKA T-Mobile Wing, ...)