build: Display correct variable for maxloglevel in config summary.
build: Display correct variable for maxloglevel in config summary.

This was likely missed in some cleanup. The `--with-maxloglevel` option
sets the variable `with_maxloglevel`, not `with_loglevel`.

Signed-off-by: Philip Tricca <fd418754d31777cf39b16b99b0350486ab840079@intel.com>

01org/TPM2.0-TSS,tpm2-software/tpm2-tss,01org/tpm2-tss,01org/tpm2-tss,tpm2-software/tpm2-tss,01org/TPM2.0-TSS,01org/tpm2-tss,tpm2-software/tpm2-tss,01org/TPM2.0-TSS,01org/TPM2.0-TSS