package/libpfm4: bump to version 4.11.0

package/libpfm4: bump to version 4.11.0

Major updates:
 - AMD Zen1 core PMU updates
 - AMD Zen2 core PMU support
 - Intel Icelake core PMU support
 - support to report if events are speculative
 - support for Extended PEBS events on Icelake
 - Intel Tremont core PMU support
 - ARM Neoverse N1 core PMU support
 - s390 event table updates
 - Marvell TX2 core and uncore updates
 - Intel CascadeLakeX uncore PMU support
 - Various other event table updates and bug fixes

http://perfmon2.sourceforge.net/

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>