Documentation/admin-guide: kernel-parameters: update CMA entries

Add qualifying build option legend [CMA] to kernel boot options
that requirce CMA support to be enabled for them to be usable.

Also capitalize 'CMA' when it is used as an acronym.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Link: https://lore.kernel.org/r/20210125043202.22399-1-rdunlap@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/kernel-parameters.txt

@@ -600,7 +600,7 @@
 			kernel/dma/contiguous.c
 
 	cma_pernuma=nn[MG]
-			[ARM64,KNL]
+			[ARM64,KNL,CMA]
 			Sets the size of kernel per-numa memory area for
 			contiguous memory allocations. A value of 0 disables
 			per-numa CMA altogether. And If this option is not
@@ -1524,12 +1524,12 @@
 	hpet_mmap=	[X86, HPET_MMAP] Allow userspace to mmap HPET
 			registers.  Default set by CONFIG_HPET_MMAP_DEFAULT.
 
-	hugetlb_cma=	[HW] The size of a cma area used for allocation
+	hugetlb_cma=	[HW,CMA] The size of a CMA area used for allocation
 			of gigantic hugepages.
 			Format: nn[KMGTPE]
 
-			Reserve a cma area of given size and allocate gigantic
-			hugepages using the cma allocator. If enabled, the
+			Reserve a CMA area of given size and allocate gigantic
+			hugepages using the CMA allocator. If enabled, the
 			boot-time allocation of gigantic hugepages is skipped.
 
 	hugepages=	[HW] Number of HugeTLB pages to allocate at boot.