tools/mm/slabinfo: fix --partial long option mapping

The long option "--partial" was incorrectly mapped to lowercase 'p' in the
opts[] array, but the getopt string and switch case handle uppercase 'P'.
This mismatch caused --partial to be rejected.

Fix the long_options mapping to use 'P' so --partial works correctly
alongside the existing -P short option.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Kaushlendra Kumar <[e-mail]>
Reviewed-by: SeongJae Park <[e-mail]>
Tested-by: SeongJae Park <[e-mail]>
Cc: Vlastimil Babka <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

tools/mm/slabinfo.c

···
 	{ "numa", no_argument, NULL, 'n' },
 	{ "lines", required_argument, NULL, 'N'},
 	{ "ops", no_argument, NULL, 'o' },
-	{ "partial", no_argument, NULL, 'p'},
+	{ "partial", no_argument, NULL, 'P'},
 	{ "report", no_argument, NULL, 'r' },
 	{ "shrink", no_argument, NULL, 's' },
 	{ "Size", no_argument, NULL, 'S'},