platform/x86: intel_ips: fix kernel-doc formatting

Fix kernel-doc function notation and comment formatting to prevent
warnings from scripts/kernel-doc.

for drivers/platform/x86/intel_ips.c:
595: warning: No description found for return value of 'mcp_exceeded'
624: warning: No description found for return value of 'cpu_exceeded'
650: warning: No description found for return value of 'mch_exceeded'
745: warning: bad line:                 cpu+ gpu+       cpu+gpu-        cpu-gpu+        cpu-gpu-
746: warning: bad line: cpu < gpu <     cpu+gpu+        cpu+            gpu+            nothing
753: warning: No description found for return value of 'ips_adjust'
747: warning: bad line: cpu < gpu >=    cpu+gpu-(mcp<)  cpu+gpu-(mcp<)  gpu-            gpu-
748: warning: bad line: cpu >= gpu <    cpu-gpu+(mcp<)  cpu-            cpu-gpu+(mcp<)  cpu-
749: warning: bad line: cpu >= gpu >=   cpu-gpu-        cpu-gpu-        cpu-gpu-        cpu-gpu-
945: warning: No description found for return value of 'ips_monitor'
1151: warning: No description found for return value of 'ips_irq_handler'
1301: warning: Function parameter or member 'ips' not described in 'ips_detect_cpu'
1302: warning: No description found for return value of 'ips_detect_cpu'
1358: warning: No description found for return value of 'ips_get_i915_syms'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: platform-driver-x86@vger.kernel.org
Link: https://lore.kernel.org/r/20231206060120.4816-1-rdunlap@infradead.org


Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>