x86/boot/e820: Use 'u64' consistently instead of 'unsigned long long'

There's a number of structure fields and local variables related
to E820 entry physical addresses that are defined as 'unsigned long long',
but then are compared to u64 fields.

Make the types all consistently u64.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Shevchenko <andy@kernel.org>
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Link: https://patch.msgid.link/20250515120549.2820541-11-mingo@kernel.org

Author: ingomolnar

arch/x86/kernel/e820.c

@@ -296,7 +296,7 @@ struct change_member {
 	/* Pointer to the original entry: */
 	struct e820_entry	*entry;
 	/* Address for this change point: */
-	unsigned long long	addr;
+	u64			addr;
 };
 
 static struct change_member	change_point_list[2*E820_MAX_ENTRIES]	__initdata;
@@ -344,7 +344,7 @@ int __init e820__update_table(struct e820_table *table)
 	struct e820_entry *entries = table->entries;
 	u32 max_nr_entries = ARRAY_SIZE(table->entries);
 	enum e820_type current_type, last_type;
-	unsigned long long last_addr;
+	u64 last_addr;
 	u32 new_nr_entries, overlap_entries;
 	u32 i, chg_idx, chg_nr;
 
@@ -641,13 +641,13 @@ static void __init e820__update_table_kexec(void)
  */
 static int __init e820_search_gap(unsigned long *gapstart, unsigned long *gapsize)
 {
-	unsigned long long last = MAX_GAP_END;
+	u64 last = MAX_GAP_END;
 	int i = e820_table->nr_entries;
 	int found = 0;
 
 	while (--i >= 0) {
-		unsigned long long start = e820_table->entries[i].addr;
-		unsigned long long end = start + e820_table->entries[i].size;
+		u64 start = e820_table->entries[i].addr;
+		u64 end = start + e820_table->entries[i].size;
 
 		/*
 		 * Since "last" is at most 4GB, we know we'll