Disallow registering an IRQ handler on the x86 PIC if one is already registered for a specific IRQ.
Disallow registering an IRQ handler on the x86 PIC if one is already registered for a specific IRQ.

jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree