fedora: help cmake to find mkl #551

Job	Run time
CI (fedora, gmxpkg)	26m 47s
CI (fedora, rawhide, TAG=rawhide,PYTHON=python3.12, true)	3m 32s
CI (ubuntu, latest)	1m 50s
CI (ubuntu, rolling, TAG=rolling)	2m 21s
CI (ubuntu, devel, TAG=devel, true)	2m 5s
CI (opensuse, latest, true)	2m 5s
CI (fedora, latest, GMX_BRANCH=release-2019,GMX_DOUBLE=ON)	27m 9s
CI (fedora, gmx2019, GMX_BRANCH=release-2019)	27m 34s
CI (fedora, gmx2023_d, GMX_BRANCH=release-2023,GMX_DOUBLE=ON)	31m 59s
CI (fedora, gmx2023, GMX_BRANCH=release-2023)	32m 14s
CI (fedora, gmx9999_d, GMX_BRANCH=main,GMX_DOUBLE=ON, true)	33m 8s
CI (fedora, gmx9999, GMX_BRANCH=main, true)	32m 14s
CI (fedora, nogmx, GMX_BRANCH=none)	23m 7s
CI (fedora, intel, TAG=38,INTEL=yes,PYTHON=python3.11, true)	30m 33s
CI (actions, latest)	45s
CI (format, latest)	51s
	4h 38m 14s

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