efi loader: Call tslog_init from efi_main

We were calling tslog_init from main; no reason to wait that long.

Fixes:		f49381cc efi/loader: Call tslog_init
Sponsored by:	https://www.patreon.com/cperciva

stand/efi/loader/efi_main.c

@@ -27,6 +27,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <bootstrap.h>
 #include <efi.h>
 #include <eficonsctl.h>
 #include <efilib.h>
@@ -101,6 +102,9 @@ efi_main(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *system_table)
 
 	setheap((void *)(uintptr_t)heap, (void *)(uintptr_t)(heap + heapsize));
 
+	/* Start tslog now that we have a heap.*/
+	tslog_init();
+
 	/* Use efi_exit() from here on... */
 
 	status = OpenProtocolByHandle(IH, &image_protocol, (void**)&img);

stand/efi/loader/main.c

@@ -924,8 +924,6 @@ main(int argc, CHAR16 *argv[])
 	char buf[32];
 	bool uefi_boot_mgr;
 
-	tslog_init();
-
 	archsw.arch_autoload = efi_autoload;
 	archsw.arch_getdev = efi_getdev;
 	archsw.arch_copyin = efi_copyin;