pcmciautils: fix SRC_URI and HOMEPAGE

Fixed:
WARNING: Failed to fetch URL http://kernel.org/pub/linux/utils/kernel/pcmcia/pcmciautils-018.tar.bz2

, attempting MIRRORS if available

The pcmciautils-018.tar.bz2 is gone from kernel.org.

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>