fix(pcie): skip non-prefetchable BARs in P094 flow

[Sujana-M]

• add BAR_MEM macro to detect non-prefetchable BAR type
• skip NP BARs and check only for Prefetch bars to avoid any side effects
• Mask the last 4 bits of the BAR value as it points to the attributes.
• Skip cndition to be verified first before checking the warn condition.
• Map Prefetch bar of base+32MB as most platforms map below 32MB to mapped to control registers, lookup tables, or routing tables.
• The endpoint check is incorrectly checked as a result only first 2 BARS were checked. Updated to check the right return type.
• When first BAR is 0, skipping to next BDF, instead of next bar, updated the changes accordingly to check for next bdf
• Replaced %.*x precision prints to zero padding prints
• Changed the SBSA Header prints from ERROR to INFO, as in logs it is considered as error
• Relates Inquiry about validity of PCIe BAR mapping in PCI_MM_01 vs. PCI_MM_03 #282

Change-Id: Ieaa6609814cd25efb6495d8b5a77d4da73eabfea