x86/platform/uv: When searching for minimums, start at INT_MAX not 99999

Using a starting value of INT_MAX rather than 999999 or 99999 means
this algorithm won't fail should the numbers being compared ever
exceed this value.
Signed-off-by: Steve Wahl <steve.wahl@hpe.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20230519190752.3297140-5-steve.wahl%40hpe.com

arch/x86/kernel/apic/x2apic_uv_x.c

@@ -1349,7 +1349,7 @@ static void __init decode_gam_rng_tbl(unsigned long ptr)
 	struct uv_gam_range_entry *gre = (struct uv_gam_range_entry *)ptr;
 	unsigned long lgre = 0, gend = 0;
 	int index = 0;
-	int sock_min = 999999, pnode_min = 99999;
+	int sock_min = INT_MAX, pnode_min = INT_MAX;
 	int sock_max = -1, pnode_max = -1;
 
 	uv_gre_table = gre;
@@ -1694,7 +1694,7 @@ static void __init uv_system_init_hub(void)
 {
 	struct uv_hub_info_s hub_info = {0};
 	int bytes, cpu, nodeid;
-	unsigned short min_pnode = 9999, max_pnode = 0;
+	unsigned short min_pnode = USHRT_MAX, max_pnode = 0;
 	char *hub = is_uv5_hub() ? "UV500" :
 		    is_uv4_hub() ? "UV400" :
 		    is_uv3_hub() ? "UV300" :