pmtools: use update-alternatives for acpidump
acpidump is both provided by acpica and pmtools, so use
update-alternatives to fix conflicts:
...
|Error: Transaction check error:
| file /usr/bin/acpidump conflicts between attempted installs of
pmtools-20130209+git0+3ebe0e54c5-r0.i586 and acpica-20190405-r0.i586
...
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>