MAINTAINERS: Add DesignWare, i.MX6, Armada, R-Car PCI host maintainers
MAINTAINERS: Add DesignWare, i.MX6, Armada, R-Car PCI host maintainers

Add entries for PCI host controller drivers in drivers/pci/host/.

Signed-off-by: Mohit Kumar <e81db36ab52392345806c7bc8596be7c3b491eae@st.com>             # DESIGNWARE
Signed-off-by: Pratyush Anand <312638e7d640785762ded1305e88fac68d55a9ab@st.com>       # DESIGNWARE
Signed-off-by: Bjorn Helgaas <f10ec01be0c6b54271af5c550cd257810bdf3268@google.com>
Acked-by: Simon Horman <9662bddcc379be37df16f02a449c344b4718c1a1@verge.net.au>         # R-CAR
Double-Plus-Acked-by: Jason Cooper <68c46a606457643eab92053c1c05574abb26f861@lakedaemon.net>   # MVEBU
Acked-by: Jingoo Han <fc379137a64feb86ce38ec5811a14280acc1ccfc@samsung.com>
Acked-by: Thierry Reding <3055038c414aef68bf32c33b8118623e7554e0f2@nvidia.com>
Acked-by: Thomas Petazzoni <a5d87d2bd7c424ee5cbdb4e978635bf653d5a005@free-electrons.com>
Acked-by: Richard Zhu <745816b10228d666aef7119ae868544c37433c8d@freescale.com>                # IMX6
KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs