tpm: Rename function grub_tpm_log_event() to grub_tpm_measure()

grub_tpm_log_event() and grub_tpm_measure() are two functions that
have the same effect. So, keep grub_tpm_log_event() and rename it
to grub_tpm_measure(). This way we get also a more clear semantics.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

grub-core/commands/efi/tpm.c

@@ -319,7 +319,7 @@ grub_tpm2_log_event (grub_efi_handle_t tpm_handle, unsigned char *buf,
 }
 
 grub_err_t
-grub_tpm_log_event (unsigned char *buf, grub_size_t size, grub_uint8_t pcr,
+grub_tpm_measure (unsigned char *buf, grub_size_t size, grub_uint8_t pcr,
 		    const char *description)
 {
   grub_efi_handle_t tpm_handle;