host_exerciser: correct handling of local memory width

[michael-adler]

Reference FIMs pass only a single bank of local memory to HE MEM. Instead of building a size matcher for what is supposed to be a simple test, HE MEM accepts the loss of wide host data flowing through narrow local memory.

HE MEM version 4 exposes the local memory width in a CSR.

Tests run:

New HW on n6001, iseries-dk_x16

[coveralls]

Pull Request Test Coverage Report for Build 9199368433

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 64.641%

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Totals
Change from base Build 9196469979:	0.0%
Covered Lines:	15826
Relevant Lines:	24483

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💛 - Coveralls