Cannot use DCD directive with more than one word

[ARamsey118]

For example ConstData DCD 0x0000000A, 0x0000000B, 0x00000010, 10 will give a warning saying iarm/arm_instructions/directives.py:107: UserWarning: Cannot reserve constant words; 0x0000000A, 0x0000000B, 0x00000010, 10

Moving each to its own line, ie:

ConstData DCD 0x0000000A
MoreData DCD 0x0000000B
;...

will work

[DeepHorizons]

Same logic applies to DCH and DCB as well