supported new Dell PERC cards - need to add to the Hardware notes

[Muthu_T at Dell.com]

Hi

   Can anybody add the following cards in i386/amd64 Hardware Notes for
5.3 Release?

PERC 4e/Si (Found on PE1850 - EMT64)
PERC 4e/Di (Found on PE2850 - EMT64)

Both cards are supported by amr(4) driver.

Thanks.
--T. Muthu Mohan