Revert "cpufreq: Fix sparse warning by making local function static"

This reverts commit fd1972a8f289e4c37c72af9e5788a0c9ebf3c5eb.
Revert "improve debug prints"

This reverts commit 71ef203627e5b59346590b91f78551dbd72c77ad.
Revert "cpufreq / core: Fix typo in comment describing show_bios_limit()"

This reverts commit 235d87306e609fe24e74a490f2e789b21509220f.
Revert "cpufreq / core: Fix printing of governor and driver name"

This reverts commit 9d60b8419cdd96803b8078f6f709f9c76aff234f.