[NTOSKRNL] Sync some INIT_FUNCTION (#2824)

- Sync some INIT_FUNCTION with how they are used and what is already
  specified in the headers.
Addendum to commit 85e5b5be (r49445).

- KdbpGetCommandLineSettings(): Remove INIT_FUNCTION.
Fix MSVC 2015 x86 custom build:
"...\ntoskrnl\kdbg\kdb.c(1699): error C2983: 'KdbpGetCommandLineSettings': all declarations must have an identical __declspec(code_seg(...))"

And may also fix obscure bugs when entering into the KDBG debugger.

ntoskrnl/cache/fssup.c

@@ -77,6 +77,7 @@ LIST_ENTRY CcpAllSharedCacheMaps;
 
 /* FUNCTIONS ******************************************************************/
 
+INIT_FUNCTION
 BOOLEAN
 NTAPI
 CcInitializeCacheManager(VOID)
@@ -107,6 +108,7 @@ CcInitializeCacheManager(VOID)
     return TRUE;
 }
 
+INIT_FUNCTION
 VOID
 NTAPI
 CcPfInitializePrefetcher(VOID)

ntoskrnl/config/cmse.c

@@ -16,7 +16,6 @@
 
 /* FUNCTIONS *****************************************************************/
 
-//INIT_FUNCTION
 PSECURITY_DESCRIPTOR
 NTAPI
 CmpHiveRootSecurityDescriptor(VOID)

ntoskrnl/ex/init.c

@@ -19,6 +19,7 @@
     RTL_SIZEOF_THROUGH_FIELD(LOADER_PARAMETER_EXTENSION, AcpiTableSize)
 
 /* Temporary hack */
+INIT_FUNCTION
 BOOLEAN
 NTAPI
 MmArmInitSystem(

ntoskrnl/kdbg/kdb.c

@@ -1691,7 +1691,6 @@ continue_execution:
     return ContinueType;
 }
 
-INIT_FUNCTION
 VOID
 NTAPI
 KdbpGetCommandLineSettings(

ntoskrnl/ob/obinit.c

@@ -46,6 +46,7 @@ GENERIC_MAPPING ObpSymbolicLinkMapping =
 PDEVICE_MAP ObSystemDeviceMap = NULL;
 ULONG ObpTraceLevel = 0;
 
+INIT_FUNCTION
 VOID
 NTAPI
 PsInitializeQuotaSystem(VOID);