Add firmware search paths for fedora rpms

[afbjorklund]

Including systems based on Fedora, such as CentOS and AlmaLinux.

There doesn't seem to be any arm32 firmware available in Fedora.

The standard path (OVMF) was never backported to Legacy Fedora (EL):

https://src.fedoraproject.org/rpms/edk2/c/e1a8a9caa18b10ff4ea5ee5d131c734e61b379de?branch=rawhide

yum provides "*/OVMF_CODE.fd"

yum provides "*/AAVMF_CODE.fd"

• Best way to run on CentOS 9 host? #1917

export QEMU_SYSTEM_X86_64=/usr/libexec/qemu-kvm

export QEMU_SYSTEM_AARCH64=/usr/libexec/qemu-kvm

---

The 32-bit firmware was there as well, but it was hidden in the RHEL builds

%if %{defined rhel}
%define build_ovmf 0
%define build_aarch64 0
%ifarch x86_64
  %define build_ovmf 1
%endif
%ifarch aarch64
  %define build_aarch64 1
%endif
%define build_riscv64 0
%define build_loongarch64 0
%else
%define build_ovmf 1
%define build_aarch64 1
%define build_riscv64 1
%define build_loongarch64 1
%endif

[AkihiroSuda]

Thanks